Product Introduction
This comprehensive assortment covers all mission-critical fasteners, hydraulic fittings, seals, and mechanical hardware for drilling equipment, including Grade 5/8/9 hex bolts, lock washers, flex locknuts, shoulder bolts, socket head cap screws, cotter pins, hydraulic quick-disconnect couplings, swivel fittings, idler rollers/bearings, O-rings, and wear bands. All parts undergo strict hardness testing and pressure validation, with full material traceability and compliance with ASTM and SAE industry benchmarks. The lineup features high-tensile structural fasteners, corrosion-resistant hydraulic fittings, durable roller components, and precision sealing parts, fully mapped to OEM part numbers for simplified inventory management and emergency field repairs.
Functional Performance Specifications
These drilling equipment fittings deliver industry-leading reliability: Grade 8/9 hex bolts provide 120,000+ PSI tensile strength, resisting vibration-induced loosening under heavy drilling loads; flex locknuts and lock washers deliver 99% retention efficiency, eliminating fastener back-off; hydraulic quick-disconnect fittings ensure zero-leak connections with 10,000+ cycle durability; idler roller bearings and bushings reduce friction by 45%, extending roller service life; and high-performance O-rings/poly pak seals maintain pressure integrity, cutting hydraulic leakage failures by 55%.
Structural & Material Features
- High-Strength Fastener Construction: Hex bolts and cap screws use heat-treated carbon alloy steel, graded to SAE Grade 5/8/9 specifications for maximum tensile and shear strength in heavy-duty drilling applications.
- Vibration-Resistant Locking Design: Flex locknuts, split lock washers, and external tooth washers feature anti-loosening geometry, preventing fastener failure under continuous rig vibration.
- Corrosion-Resistant Hydraulic Fittings: Quick-disconnect couplers and swivel fittings use zinc-plated steel construction, resisting rust and degradation from drilling mud, saltwater, and hydraulic fluid exposure.
- Wear-Resistant Mechanical Components: Idler rollers, bushings, and spacers use hardened steel surfaces, reducing abrasion and extending service life in high-friction drilling modules.
- Precision Sealing Technology: O-rings, poly pak seals, and wear bands use oil-resistant elastomer compounds, maintaining pressure sealing for hydraulic and fluid circulation systems.
Applicable Operating Conditions
These fittings and fasteners are built for harsh onshore and offshore drilling environments, optimized for drilling rig top drives, hydraulic cylinders, pipe handling equipment, and idler roller assemblies. They perform reliably in ambient temperatures ranging from -20°F to 160°F, resist exposure to drilling mud, hydraulic oil, saltwater, and heavy mechanical vibration, and comply with API 7K and ASTM industrial safety standards for drilling equipment.
Maintenance & Service Recommendations
- Inspect all hex bolts, locknuts, and washers quarterly for loosening, corrosion, or thread damage; retorque to OEM specifications and replace degraded fasteners to prevent structural failure.
- Check hydraulic quick-disconnect fittings and swivel joints every 6 months for wear or leakage; replace damaged seals and O-rings to maintain pressure integrity.
- Lubricate idler rollers, bearings, and bushings per OEM guidelines every 5,000 operating hours to reduce friction and premature wear.
- Inspect cotter pins, retaining rings, and dowel pins semi-annually for bending or breakage; replace damaged hardware to secure critical component assemblies.
- Replace worn seals, wear bands, and backup rings annually to prevent hydraulic fluid leakage and contamination.
- Stock high-wear consumables (bolts, nuts, washers, O-rings, quick-disconnect fittings) at recommended minimum levels to eliminate unplanned rig shutdowns.
- We supply the following spare parts:
| No. | Item # | PN | Description |
| 1 | 72-12 | 806442 | 5/8″-11 X 3.50 LG. HEX BOLT GRD. 9 |
| 2 | 72-13 | 91074A035 | 5/8″ LOCK WASHER ASSY. |
| 3 | 72-16 | 30114 | BOLT, WRENCH, 1.25 x 6.37 |
| 4 | 72-17 | 806646 | 1 1/4″-12 FLEX LOCKNUT |
| 5 | 72-18 | 806449 | 5/8″-11 X 5.95 LG. HEX BOLT GRD. 9 |
| 6 | 72-19 | 806414-500 | 5/8″-11 FLEX NUT |
| 7 | 72-20 | 30116 | BOLT WRENCH |
| 8 | 72-33 | 30043-2 | ARM BOLT |
| 9 | 72-38 | 30145 | LINKAGE JAM NUT |
| 10 | 72-34 | 30043-3 | 5/8″-11 X 5.95 LG. HEX BOLT GRD. 18 |
| 11 | 72-39 | 806539-1 | 5/8″-11 X 5.95 LG. HEX BOLT GRD. 19 |
| 12 | 72-41 | 806544 | 5/8″-11 X 5.95 LG. HEX BOLT GRD. 20 |
| 13 | 72-42 | 806523 | 3/4″-16 FLEX NUT |
| 14 | 72-45 | 806523 | 1″-12 X 6.00 LG. HEX BOLT |
| 15 | 72-44 | 806594-500 | 1.00″-14 FLEX NUT |
| 16 | 72-43 | 30056A | SHOULDER BOLT |
| 17 | 72-52 | 806004 | 3/8″-16 X .75 LG. HEX BOLT GRD.5 |
| 18 | 72-53 | 810645 | 3/8″ LOCK WASHER |
| 19 | 72-55 | 808413 | 1/2″-13 x .75 LG.SHCS |
| 20 | 72-56 | 810703 | 1/2″ LOCK WASHER |
| 21 | 72-62 | 806221 | 1/2″-13 FLEX LOCKNUT |
| 22 | 74-4 | 30056A | SHOULDER BOLT |
| 23 | 74-9 | 30280 | ASSEMBLY ADJUST NUT LOCKING |
| 24 | 74-10 | 30035 | ASSEMBLY ADJUST NUT |
| 25 | 74-17 | 30118 | ANGLE BRACKET BOLT. LARGE |
| 26 | 74-18 | 30117 | ANGLE BRACKET BOLT SMALL |
| 27 | 74-22 | 30055 | NUT RETAINER |
| 28 | 74-23 | 3006 | CLIP NUT RETAINER |
| 29 | 74-37 | 30115 | BOLT WRENCH |
| 30 | 74-38 | 806646 | 1/4-12 FLEX LOCKNUT |
| 31 | 74-39 | 806453 | 5/8″- X 4.00 HEX BOLT GRD.9 |
| 32 | 74-40 | 806414-500 | 5/8″ NUT |
| 33 | 74-41 | 30076 | NUT RETAINER |
| 34 | 74-42 | 806630 | HEX BOLT |
| 35 | 74-43 | 91074A038 | ,00 LOCK WASHER ASSY. |
| 36 | 74-44 | 806594-500 | NUT |
| 37 | 74-45 | 91074A036 | 3/4 WASHER ASSEMBLY |
| 38 | 74-46 | 806544 | 3/4″-16 5.50 LG HEX BOLT GRD.9 |
| 39 | 74-47 | 30178 | BOLT MODIFIED |
| 40 | 74-48 | 0 | 3/4″ – 16x .75 LG. HEX BOLT GRD. 9 |
| 41 | 74-51 | 810703 | WASHER |
| 42 | 74-52 | 808413 | 1/2″-13x75LG.SHCS |
| 43 | 74-54 | 806539 | 3/4″ – 16 X 3.00 LG. HEX BOLT GRD.9 |
| 44 | 74-55 | 806523 | 3/4 6 FLEX NUT |
| 45 | 74-56 | 806025 | 3/8 50 LG. HEX BOLT |
| 46 | 74-57 | 810645 | 3/8 WASHER |
| 47 | 74-58 | 805847 | /4″ 20X 1.00 LG. HEX BOLT |
| 48 | 74-59 | 810587 | 1/4 LOCK WASHER |
| 49 | 74-60 | 806004 | 3/8″-16X.75LG HEX BOLT GRD.5 |
| 50 | 74-62 | 809403-1 | #10-32 X LG. PHILLIPS HD. SCREW SS |
| 51 | 74-63 | 809476 | #10 LOCK WASHER |
| 52 | 74-71 | 806246 | 1/2″ – 13 X LG HEX BOLT GRD.9 |
| 53 | 74-72 | 806552 | 718″-9 x 2,50 LG. HEX BOLT GRD.9 |
| 54 | 76-92 | 805918 | 5/1 -18X .00 LG. HEX BOLT |
| 55 | 76-81 | 808353 | 3/8″-16X1.00LG. SHCS |
| 56 | 76-78 | 805842 | 1/4″ -20 X 75LG. HEX BOLT |
| 57 | 76-77 | 810587 | 1/4 LOCK WASHER |
| 58 | 76-75 | AN936B616 | 5/16″ EXTERNAL TOOTHLOCK WASHER |
| 59 | 76-56 | 810616 | 5/16 LOCK WASHER |
| 60 | 76-55 | 810616 | 5/16-18 50 LG. HEX BOLT |
| 61 | 76-45 | 810703 | 1/2″ LOCK WASHER |
| 62 | 76-44 | 805834 | 1/4 50 LG HEX BOLT |
| 63 | 76-43 | 806580 | 1.00-8 FLEX LOCK NUT |
| 64 | 76-42 | 810648 | 3/8 FLAT WASHER |
| 65 | 76-41 | 806003 | 3/8″ 75 LG. HEX BOLT |
| 66 | 76-40 | 806251 | 25 HEX BOLT GRD.9 |
| 67 | 76-39 | 806373 | HEX BOLT GRD.9 |
| 68 | 76-38 | 91074A033 | 1/2″ LOCK WASHER ASSEMBLY |
| 69 | 76-37 | 806267 | 1/2″-13 X 1.50 LG. HEX BOLT GRD. 8 |
| 70 | 76-36 | 806435 | 5/8″-11 X 1.50 LG. HEX BOLT GRD. 9 |
| 71 | 76-35 | 806450 | 5/8″-11 X 7.00 LG. HEX BOLT GRD.9 |
| 72 | 76-34 | 806416 | 5/8″-11 HEX NUT |
| 73 | 76-33 | 810732 | 5/8″ LOCK WASHER |
| 74 | 76-32 | 806452 | 5/8″ HEX BOLT |
| 75 | 76-31 | 810645 | 3/8 LOCK WASHER |
| 76 | 76-30 | 806025 | 3/8 HEX BOLT |
| 77 | 76-29 | 810589 | 1/4 FLAT WASHER |
| 78 | 76-25 | 25721-RR | RETAINING RING DLER ROLLER |
| 79 | 76-24 | 25721-S | SEAL IDLER ROLLER |
| 80 | 76-23 | 25722 | SPACER IDLER SPINNER |
| 81 | 76-22 | 25723 | IDLER BUSHING |
| 82 | 76-21 | 25/24 | BEARING SPACER IDLER ROLLER |
| 83 | 76-20 | 25721-B | BEARING IDLER ROLLER |
| 84 | 76-19 | 25721 | ROLLER. IDLER |
| 85 | 76-18 | 91074A038 | 1.00 WASHER ASSY |
| 86 | 76-17 | 91268A935 | 3X9,50LG. HEX BOLT |
| 87 | 76-15 | RST-275-S | RING. RETAINER |
| 88 | 76-14 | 24729 | BEARING SPINNER FLANGE |
| 89 | 76-12 | 24643 | KEY. ROLLER |
| 90 | 76-11 | 24637 | BUSHING SPINNER |
| 91 | 76-10 | 806594-500 | 1.00 4 FLEX NUT |
| 92 | 76-9 | 806586 | 1.00″-14 HEX JAM NUT |
| 93 | 76-8 | 25725 B | PIN |
| 94 | 78-25 | 810703 | 1/2″ LOCK WASHER, SPLIT |
| 95 | 78-24 | 806221-500 | 1/2″ FLEX-TOP LOCK NUT |
| 96 | 78-23 | 810705 | 1/2″ FLAT WASHER |
| 97 | 78-22 | 806319 | 1/2″-13 X 6.0 LONG HEX BOLT, GRADE 5 |
| 98 | 78-21 | 806313-2 | 1/2″-13 X 5.5 LONG HEX BOLT, GRADE 8 |
| 99 | 78-20 | 806311 | 1/2″-13 X 4.5 LONG HEX BOLT, GRADE 8 |
| 100 | 78-19 | 806297 | 1/2″-13 X 2.5 LONG HEX BOLT, GRADE 9 |
| 101 | 78-18 | 806276 | 1/2″-13 X 1.75 LONG HEX BOLT, GRADE 8 |
| 102 | 78-17 | 806268 | 1/2″-13 X 1.5 LONG HEX BOLT, GRADE 9 |
| 103 | 78-16 | 806246 | 1/2″-13 X 1.0 LONG HEX BOLT, GRADE 9 |
| 104 | 78-15 | 810645 | 3/8″ LOCK WASHER, SPLIT |
| 105 | 78-14 | 806004-1 | 3/8″-16 X .75 LONG HEX BOLT, GRADE 9 |
| 106 | 78-13 | 810616 | 5/16″ LOCK WASHER, SPLIT |
| 107 | 78-12 | 805922 | 5/16″-18 X 2.0 LONG HEX BOLT, GRADE 8 |
| 108 | 80-31 | 810588 | 1/4″ LOCK WASHER, HIGH COLLAR |
| 109 | 80-30 | 808194 | 1/4″-20 X 3.62 LONG SHCS |
| 110 | 80-29 | 809475-44 | 1/4″-20 X 4.25 LONG SHCS |
| 111 | 80-28 | 809476 | #10 LOCK WASHER, HIGH COLLAR |
| 112 | 80-27 | 809475-375 | #10-24 X 3.75 LONG SHCS |
| 113 | 80-21 | 2081-4-2S | -4MNPT X -2FNPT HEX BUSHING HP |
| 114 | 82-26 | 061-H26M | QUICK DISCONNECT, MALE |
| 115 | 82-25 | 061-H26F | QUICK DISCONNECT, FEMALE |
| 116 | 82-23 | H53 | QUICK DISCONNECT, FEMALE |
| 117 | 82-16 | 2096-8S | -8MNPT HP COUPLER |
| 118 | 82-15 | 2047-8-8S | -8MNPT X -8FNPT 90 DEG. SWIVEL |
| 119 | 91-9 | 2082-4S | 1/4″ PIPE PLUG |
| 120 | 94-11 | 810703 | 1/2″ LOCK WASHER |
| 121 | 94-10 | 806246 | 1/2″ -13 X 1.00 LG. HEX BOLT GRD.9 |
| 122 | 94-9 | 805987-750 | 3/8″-16 FLEX LOCKNUT |
| 123 | 94-8 | 806041 | 3/8″-16 X 2.00 LG. HEX BOLT GRD.5 |
| 124 | 94-6 | 810645 | 3/8″ LOCK WASHER |
| 125 | 94-5 | 806004 | 3/8″-16 X .75 LG. HEX BOLT GRD.5 |
| 126 | 96-18 | 810648 | 3/8″ FLAT WASHER |
| 127 | 96-17 | 806051 | 3/8″-16 x 3.50 LG. HEX BOLT |
| 128 | 96-13 | 810703 | 1/2″ LOCK WASHER |
| 129 | 96-12 | 806246 | 1/2″ -13 X 1.00 LG. HEX BOLT GRD.9 |
| 130 | 96-11 | 805987-750 | 3/8″-16 FLEX LOCKNUT |
| 131 | 96-10 | 806041 | 3/8″-16 X 2.00 LG. HEX BOLT GRD.5 |
| 132 | 96-8 | 810645 | 3/8″ LOCK WASHER |
| 133 | 96-7 | 806004 | 3/8″-16 X .75 LG. HEX BOLT GRD.5 |
| 134 | 100-44 | 806042 | 3/8″ – 6 X 2.00 LG. HEX BOLT |
| 135 | 100-43 | 806049 | 3/8″ – 6 X 3.25 LG, HEX BOLT |
| 136 | 100-42 | 806503 | 3/4 -10 FLEX LOCKNUT |
| 137 | 100-41 | 13143 | SUSPENSION RING |
| 138 | 100-40 | 13179-2 | ADJUST SCREW |
| 139 | 100-39 | 30177 | BOLT MODIFIED |
| 140 | 100-37 | 806510 | 3/4″ X 9.50 LG. HEX BOLT GRD.9 |
| 141 | 100-36 | 807490 | PIN. COTTER 188 X 2.0 |
| 142 | 100-35 | 806581-1 | 1.00″-8 CASTLE NUT |
| 143 | 100-34 | 810821 | 1.00 FLAT WASHER |
| 144 | 100-33 | 808489 | 5/8″-18 SOCKET HD. SCREW 2.00 LG. |
| 145 | 100-32 | 806511 | 3/4″ X 2.00 LG. HEX BOLT GRD.9 |
| 146 | 100-31 | 806503-1 | 3/4″ -10 FLEX LOCKNUT |
| 147 | 100-29 | 806003 | 3/8 -16 X .75 LG. HEX BOLT |
| 148 | 100-28 | 806221 | 1/2″-13 FLEX LOCKNUT |
| 149 | 100-27 | 806303 | 1/2′-13 X 3.50 LG. HEX BOLT GRD.9 |
| 150 | 100-26 | 810703 | 1/2 LOCK WASHER |
| 151 | 100-24 | 806415 | 5/8″ -11 THIN FLEX LOCKNUT |
| 152 | 100-23 | 806442 | 5/8″-11 X 3.50 LG. HEX BOLT GRD.9 |
| 153 | 100-22 | 30170-2 | SPACER. TILT CYLINDER |
| 154 | 100-21 | 30170-1 | SPACER, TILT CYLINDER |
| 155 | 100-19 | 810587 | 1/4 LOCK WASHER |
| 156 | 100-18 | 805842 | 1/4″ -20 .75 LG. HEX BOLT |
| 157 | 100-17 | 805922 | 5/16″ X (2.0 LG. HEX BOLT |
| 158 | 100-16 | 810616 | 5/16 LOCK WASHER |
| 159 | 100-13 | 810645 | 3/8″ LOCK WASHER |
| 160 | 100-12 | 806246 | 1/2″ – 13 1.00 LG. HEX BOLT GRD.9 |
| 161 | 100-7 | 30163 | BOLT MODIFIED |
| 162 | 100-6 | 810732 | 5/8 LOCK WASHER |
| 163 | 100-5 | 810761 | 3/4 LOCK WASHER |
| 164 | 100-4 | 30164 | 3/4″-10 X 1.62 LG. HEX BOLT GRD.8 |
| 165 | 102-8 | 806438 | 5/8″-11 X 2.00 LG. HEX BOLT |
| 166 | 102-7 | 806416 | 5/8″ -11 HEX NUT |
| 167 | 102-6 | 810587 | 1/4″ LOCK WASHER |
| 168 | 102-5 | 805842 | 1/4″ -20 X .75 LG. HEX BOLT |
| 169 | 104-23 | 91744A537 | SPADE HD.THUMB SCR. |
| 170 | 104-22 | 9307K62 | GROMMET |
| 171 | 104-21 | 91732A368 | 1/4-20 HELICOIL |
| 172 | 104-20 | 94912A455 | 1/4-20 CAPTIVE |
| 173 | 104-17 | 806004 | 3/8″-16 X .75 LG. HEX BOLT GRD.5 |
| 174 | 104-16 | 810645 | 3/8″ LOCK WASHER |
| 175 | 104-15 | 810732 | 5/8″ LOCK WASHER |
| 176 | 104-12 | 810703 | 1/2″ LOCK WASHER |
| 177 | 104-11 | 810588 | 1/4″ Lock Washer, Hi Collar |
| 178 | 104-10 | 808193 | 1/4″-20 x 1.75 LG. SOC. HD. CAP SCREW |
| 179 | 104-9 | 806013D | 3/8″-16 X 1.00 LG GRD 8 DRILLED |
| 180 | 104-7 | 806580 | 1.00″-8 FLEX LOCK NUT |
| 181 | 104-6 | 806268 | 1/2″ -13 X 1.50 LG. HEX BOLT GRD.9 |
| 182 | 104-5 | 806436 | 5/8″-11 X 1.50 LG. HEX BOLT GRD.9 |
| 183 | 104-4 | 806585M | 1.00″ -8 X 5.00 LG. HEX BOLT GRD.9 |
| 184 | 106-16 | 807493-125 | 1/8″ X 1.25 LONG COTTER PIN |
| 185 | 106-15 | 807493-250 | 1/8″ X 2.50 LONG COTTER PIN |
| 186 | 106-14 | 806681 | 1 1/2″ CASTLE NUT |
| 187 | 106-13 | PRP568-333 | O RING |
| 188 | 106-12 | PRP568-218 | O RING |
| 189 | 106-11 | 30080 B | WASHER, SPINNER MOUNT |
| 190 | 106-10 | 810822 | 1.00″ FLAT WASHER 2.00″ OD |
| 191 | 106-9 | 192 | BEARING |
| 192 | 106-8 | 8065812 | 1.00″ -8 X 2.25 HEX BOLT GRADE 9 |
| 193 | 106-6 | 30244 | WASHER, MODIFIED |
| 194 | 106-5 | 30243 | ASSEMBLY, RETURN BUMPER |
| 195 | 108-8 | 809475-525 | #10-24 X 5.25 LG. SHCS |
| 196 | 108-7 | 809476 | #10 LOCK WASHER |
| 197 | 110-21 | 810703 | 1/2″ LOCK WASHER |
| 198 | 110-20 | 20029-250 | WASHER |
| 199 | 110-19 | 30033 | INDEX, PIPE STOP |
| 200 | 110-17 | 809746 | #10 LOCK WASHER HIGH COLLAR |
| 201 | 110-15 | 806221-500 | 1/2″ FLEX-TOP LOCK NUT |
| 202 | 110-14 | 806289M | 1/2″-13 X 2.25 LG. HEX BOLT MODIFIED |
| 203 | 110-13 | 806313-2 | 1/2″-13 X 5.50 LG. HEX BOLT |
| 204 | 110-12 | 30060A | PIVOT BOLT, PIPE STOP- MODIFIED |
| 205 | 110-9 | 807801 | POP RIVET |
| 206 | 110-8 | 809403-1 | #10-32 X .62 LG. PHILLIPS HD. SCREW SS |
| 207 | 110-6 | 807507-1 | 5/16″ X 1.12 LG. DOWEL PIN |
| 208 | 110-5 | 20070 | ADJUST NUT |
| 209 | 110-3 | 30050 E | ADJUST SCREW |
| 210 | 118-11 | 810616 | 5/16″ DIA. LOCK WASHER |
| 211 | 118-9 | 805916 | 5/16″-18 X .50 LONG HEX BOLT, GRADE 8 |
| 212 | 126-10 | * | T-SEAL |
| 213 | 126-9 | 806594-500 | 1.00″ – -14 FLEX NUT |
| 214 | 126-8 | 806622 | 1.00″-14 X 4.00 LG. HEX BOLT GRD.9 |
| 215 | 126-6 | 808372 | 3/8″-16 X. .38 LG. SH SET SCREW |
| 216 | 126-5 | * | WIPER |
| 217 | 126-4 | * | BACK UP RING |
| 218 | 126-3 | * | O-RING |
| 219 | 126-2 | * | POLY PAK |
| 220 | 126-1 | * | WEAR BAND |
| 221 | 128-11 | 810557 | 3/16″ FLAT WASHER |
| 222 | 128-8 | A22F | CORNER BOLT |
| 223 | 132-9 | 810703 | 1/2″ LOCK WASHER |
| 224 | 132-8 | 806276 | 1/2″ -13 X 1.75LG. HEX BOLT GRD.8 |
| 225 | 132-5 | 810705 | 1/2″ FLAT WASHER |
| 226 | 132-4 | 20213A | DIE RETAINER, MIDDLE-BOTTOM |
| 227 | 132-3 | 20208-870 | SPACER, DIE HOLDER |
| 228 | 132-2 | 98381A622 | 3/8″ X .75 LG. S.S. DOWEL PIN |
| 229 | 134-12 | 810703 | 1/2″ LOCK WASHER |
| 230 | 134-11 | 806276 | 1/2″ – -13X1.75 LG. HEX BOLT GRD.8 |
| 231 | 134-10 | 20208A | SPACER BUSHING, ROLLER |
| 232 | 134-7 | 20208-870 | SPACER, DIE HOLDER |
| 233 | 134-6 | 98381A622 | 3/8″ X .75 LG. S.S. DOWEL PIN |
| 234 | 134-5 | 810705 | 1/2″ FLAT WASHER |
| 235 | 134-4 | 806303 | 1/2″-13 X 3.50 LG. HEX BOLT GRD.9 |
| 236 | 136-9 | 806276 | 1/2 ” -13 X 1.75 LG . HEX BOLT GRD.8 |
| 237 | 136-8 | 20208-870 C | SPACER , DIE HOLDER |
| 238 | 136-5 | 98381A622 | 3/8 ” X .75 LG . SS DOWEL PIN |
| 239 | 136-4 | 810703 | 1/2 ” LOCK WASHER |
| 240 | 136-3 | 810705 | 1/2 ” FLAT WASHER |
| 241 | 138-9 | 810703 | 1/2 ” LOCK WASHER |
| 242 | 138-6 | 806303 | 1/2 ” -13 X 3.50 LG . HEX BOLT GRD.9 |
| 243 | 138-5 | 20208A | SPACER BUSHING , ROLLER |
| 244 | 138-4 | 98381A622 | 3/8 ” X .75 LG . S.S. DOWEL PIN |
| 245 | 140-9 | 810703 | 1/2 ” LOCK WASHER |
| 246 | 140-8 | 806276 | 1/2 ” -13 X 1.75 LG . HEX BOLT GRD.8 |
| 247 | 140-6 | 20208-870 C | SPACER , DIE HOLDER |
| 248 | 140-5 | 98381A622 | 3/8 ” X .75 LG . S.S. DOWEL PIN |
| 249 | 140-4 | 810705 | 1/2 ” FLAT WASHER |
| 250 | 146-19 | 808265 | 1/4 ” -28 X .38 LG . SOC.HD SET SCREW |
| 251 | 146-18 | 806523 | 3/4 ” 16 FLEX NUT |
| 252 | 146-17 | 806539 | 3/4 ” -16 X 3.00 LG . HEX BOLT GRD.9 |
| 253 | 146-16 | 807493-125 | 1/8 ” X 1.25 LG . COTTER PIN |
| 254 | 146-15 | 20045A – 050 | CLEVIS PIN , Ø.875 X 2.25 GRIP |
| 255 | 146-6 | PRP568-230 | O RING |
| 256 | 146-5 | 20029-1 | WASHER |
| 257 | 146-4 | 20229 | LINKAGE NUT , MODIFIED |
| 258 | 150-18 | 810645 | 3/8″ LOCK WASHER |
| 259 | 150-16 | 806069 | 3/8 -16 x 4.5 LG L9 |
Field Failure Repair Case Studies
Case 1: Vibration-Induced Bolt Failure
A drilling rig top drive linkage experienced a Grade 5 hex bolt failure due to constant vibration, causing misalignment and operational shutdown. Installing OEM Grade 9 hex bolts and lock washers restored structural stability and resumed drilling operations.
Case 2: Hydraulic Quick-Disconnect Leakage
A worn hydraulic quick-disconnect female fitting on a tilt cylinder caused severe fluid leakage, disabling cylinder actuation. Replacing the OEM quick-disconnect coupling and internal O-ring eliminated leakage and restored full hydraulic function.
Case 3: Idler Roller Bearing Wear
Degraded idler roller bearings and bushings led to excessive friction and uneven rotation in a pipe handling module. Swapping in OEM roller bearings and spacers reduced friction and restored smooth equipment operation.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these fasteners compatible with standard drilling rig top drives and hydraulic systems? | Yes, these Grade 5/8/9 bolts, nuts, and hydraulic fittings are designed for direct fitment with standard drilling top drives, hydraulic cylinders, and pipe handling equipment. |
| Do these fittings meet ASTM and SAE industrial fastener standards? | Absolutely, all fasteners comply with ASTM A325/A490 and SAE J995 standards, ensuring consistent tensile strength and reliability for drilling applications. |
| What types of hydraulic and sealing components are included in this list? | This catalog includes quick-disconnect couplings, swivel fittings, O-rings, poly pak seals, wear bands, and backup rings for drilling equipment hydraulic systems. |
Procurement Guidance & Closing Value Statement
This drilling equipment fittings and fastener catalog serves as both a formal oilfield procurement benchmark and a hands-on technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket hardware that fails prematurely under heavy loads and vibration, reduce long-term rig maintenance expenses, and uphold the safety and operational reliability of your drilling equipment. Every component is a verified OEM-matched part that guarantees perfect fitment, consistent heavy-duty performance, and full adherence to global industry standards, making it the definitive resource for maintaining drilling rig fasteners, hydraulic fittings, and mechanical hardware.
Whether you need to replace worn hex bolts, faulty hydraulic couplings, degraded seals, damaged roller components, or loose fasteners to restore your rig to full working order, or stock certified fittings for routine maintenance and unforeseen breakdowns, this catalog provides the exact part numbers, quantities, and performance specifications your drilling operation demands. Secure your supply of authentic drilling equipment grade bolts, nuts, and hydraulic fittings today to protect your rig investment, maintain uninterrupted drilling progress, and keep your equipment operating safely and efficiently in demanding oilfield environments.
