1. Product Introduction

This Cameron bolt and nut list (covering key part numbers: 075-3123, 080-8489, EC287, 002-5784, 082-4790, etc.) is specifically designed for industrial equipment including Cameron centrifugal compressors, reciprocating pumps, and pipeline valves—equipment widely used in oil and gas exploration, petrochemical processing, and industrial manufacturing. The target users include plant maintenance engineers, procurement managers, and technical supervisors in these industries, who have core needs for high-precision, corrosion-resistant, and load-bearing fasteners that meet industrial grade standards. The list provides a one-stop procurement and technical reference solution, ensuring that each fastener matches the original equipment (OEM) specifications, solves the pain points of mismatched parts, low durability, and potential safety hazards in equipment operation, and maximizes equipment operational stability and service life.

2. Functional Instructions

Each fastener in the Cameron bolt and nut list is designed with targeted functions to adapt to different equipment components and working environments:

• Lock Washers (e.g., 075-3123, 002-5776, 082-1181): Provide anti-loosening performance, prevent fastener loosening caused by equipment vibration during operation, and ensure the tightness of connections. The 0.375″, 0.500″, 1.000″, and 1.500″ specifications match different bolt sizes, with a tensile strength of ≥800MPa and a hardness of HRC 24-32.
• Hex Nuts (e.g., 080-8489, 002-5784, EN125): Cooperate with bolts to achieve reliable connection, with different grades (G8, A194-2H) to meet different load-bearing requirements. The heavy hex nut (002-5784, EN115) is designed for high-pressure and high-load scenarios, with a proof load of ≥600MPa.
• Hex Cap Screws (e.g., 082-4790, 002-1670, 002-1648): High-strength fastening for key equipment components, with thread specifications including UNC (Unified National Coarse) and NC (National Coarse), ensuring compatibility with Cameron OEM equipment. The G8 grade bolts have a yield strength of ≥640MPa and an ultimate tensile strength of ≥800MPa.
• Special Parts (EW109, EP418, EG164): Safety wire (EW109) is used for secondary anti-loosening of fasteners in high-vibration environments; cotter pin (EP418) is used for positioning and locking of shafts and bolts; grease fittings (EG164, 108-0243) ensure lubrication of equipment connections, extending service life.

3. Structural Characteristics

3.1 Material Structure

All fasteners are manufactured using high-purity carbon steel (for G8 grade bolts/nuts) and 304 stainless steel (for SS washers, 421-2699), with a uniform material structure and no internal defects (detected by ultrasonic testing, with a defect detection rate of 100%). The surface treatment process adopts hot-dip zinc plating (for 002-1542 washer-lock) and passivation treatment (for stainless steel parts), with a zinc coating thickness of 8-12μm, which can effectively resist corrosion in humid, high-temperature, and chemical environments.

3.2 Design Structure

The hex nuts and bolts adopt a standard hexagon structure, which is easy to install and disassemble with common tools (wrenches, socket tools), improving maintenance efficiency. The lock washers are designed with a serrated structure, which increases the friction between the washer and the connected part, enhancing the anti-loosening effect. The carriage bolts (EC287, EC278) have a countersunk head design, ensuring a flat surface after installation, avoiding interference with equipment operation. All threads are precision processed with a thread tolerance of 6H/6g, ensuring smooth assembly and reliable connection.

4. Applicable Working Conditions

The Cameron bolt and nut series are suitable for harsh industrial working conditions, with specific applicability as follows:

• Temperature Range: -40℃ to 350℃, suitable for low-temperature outdoor oil and gas fields and high-temperature petrochemical reactors.
• Pressure Range: 0-100MPa, applicable to high-pressure pipeline systems and high-pressure equipment connections.
• Corrosion Environment: Resistant to weak acid, weak alkali, and salt spray corrosion (passing 1000-hour salt spray test, corrosion rate ≤0.01mm/year), suitable for coastal industrial plants and chemical processing workshops.
• Vibration Environment: The anti-loosening design of lock washers and heavy hex nuts can withstand continuous vibration (frequency 10-50Hz, amplitude 0.1-0.5mm) without loosening, suitable for centrifugal compressors and reciprocating pumps.

Typical application scenarios: Oil and gas wellhead equipment, petrochemical pipeline installation, industrial pump and compressor maintenance, power plant equipment assembly, and other fields requiring high-reliability fasteners.

5. Maintenance and Maintenance Suggestions

To ensure the service life of the fasteners and the safe operation of the equipment, the following maintenance and maintenance suggestions are provided:

1. Regular Inspection: Check the tightness of bolts and nuts every 3 months (for general equipment) or 1 month (for high-vibration, high-pressure equipment) using a torque wrench. The recommended torque for G8 grade M12 bolts is 45-55N·m, and for M16 bolts is 85-95N·m.
2. Cleaning and Lubrication: After equipment maintenance, clean the fasteners with neutral detergent to remove oil, dust, and corrosion products, then apply a thin layer of anti-rust lubricant (such as molybdenum disulfide grease) to prevent corrosion and facilitate subsequent disassembly.
3. Replacement Standard: When the fastener has obvious corrosion (corrosion area exceeding 10% of the surface area), thread damage (thread stripping, deformation), or fatigue cracks (detected by magnetic particle testing), it must be replaced immediately. The service life of general fasteners in normal working conditions is 3-5 years, and those in harsh environments should be replaced every 1-2 years.
4. Storage Requirements: Unused fasteners should be stored in a dry, ventilated warehouse with a relative humidity of ≤60%, avoiding direct contact with water and chemical substances. They should be placed in classified containers according to part numbers to prevent mixing and damage.

We supply the following spare parts:

Cameron Bolt and nut list

Item N°	Description	Manufacturer (OEM)	Manufacturer Part Number	Unit
1	Washer-Lock, 0.375″	CAMERON	075-3123	EA
2	NUT-HEX, .500 13 NC G8	CAMERON	080-8489	EA
3	CSCR HEX 1.500 6NC 20.00 G8	CAMERON	EC287	EA
4	NUT-HEX, HVY 1.500 6 NC A194-2H	CAMERON	002-5784	EA
5	Bolt HX .500 13NC 1.75 G8	CAMERON	082-4790	EA
6	Washer-Lock, 1.500″	CAMERON	002-5776	EA
7	Bolt HX .500 13NC 2.00 G8	CAMERON	082-7222	EA
8	Bolt HX 1.000 8NC 4.00 G8	CAMERON	002-1670	EA
9	Washer-Lock, 0.500″	CAMERON	080-1181	EA
10	Screw-Drive, #6 X 5/16″ Long	CAMERON	108-0562	EA
11	Washer-Lock, 1.000″	CAMERON	002-1544	EA
12	Washer-Flat, 0.500″ NAR	CAMERON	081-0991	EA
13	Bolt HX .750 10NC 3.00 G8	CAMERON	002-1648	EA
14	CSCR HEX 1.125 7NC 4.50 G8	CAMERON	EC278	EA
15	NUT-HEX, 1.000 8 NC G8	CAMERON	002-1088	EA
16	Bolt HX .375 16NC 1.25 G8	CAMERON	080-8476	EA
17	NUT-HEX, 1.125 7 NC G8	CAMERON	EN129	EA
18	Washer-Lock, 0.750″ Zinc	CAMERON	002-1542	EA
19	Bolt HX .625 11NC 2.00 G8	CAMERON	002-1630	EA
20	Washer-Lock, 1.125	CAMERON	108-0085	EA
21	NUT-HEX, .375 16 NC G8	CAMERON	EN125	EA
22	STUD 1.000 8NC 5.000 1.75 B7	CAMERON	ES475	EA
23	Bolt HX .750 10NC 1.75 G8 DH	CAMERON	A167233	EA
24	Washer-Lock, 0.625″	CAMERON	002-1541	EA
25	Bolt HX .375 16NC 1.50 G8	CAMERON	400-9640	EA
26	Safety Wire .047 SS	CAMERON	EW109	EA
27	Washer-Lock, 0.250″	CAMERON	021-3584	EA
28	Bolt HX .375 16NC 1.25 G8 DH	CAMERON	515-0028	EA
29	Washer-Flat, 0.500″ Wide	CAMERON	002-1549	EA
30	Relief-Grease 1/8″ NPT	CAMERON	EG164	EA
31	Bolt HX .500 13NC 1.00 G8	CAMERON	080-1180	EA
32	Bolt HX .500 13NC 1.25 G8	CAMERON	400-9752	EA
33	Bolt HX .625 11NC 1.75 G8	CAMERON	002-1629	EA
34	CSCR HEX 1.500 6NC 5.50 G8	CAMERON	EB456	EA
35	Fitting-Grease, .250 NPT 0º	CAMERON	108-0243	EA
36	CSCR SK M20 X 130	CAMERON	EC437	EA
37	NUT-HEX, 1.500 6 NC G8	CAMERON	EN185	EA
38	CSCR HEX 1.500 6NC 5.75 G8	CAMERON	EB597	EA
39	Washer-Lock, 1.250″	CAMERON	002-1545	EA
40	Bolt HX .375 116NC 1.00 G8	CAMERON	081-0971	EA
41	Bolt HX 1.250 7NC 20.00 G8	CAMERON	EB206	EA
42	Bolt HX .875 9NC 4.00 G8	CAMERON	002-1664	EA
43	NUT-HEX, HVY 1.250 7 NC A194-2H	CAMERON	EN115	EA
44	Washer-Lock, 0.875″	CAMERON	002-1543	EA
45	CSCR Flat SK .500 UNC 1.25 G8	CAMERON	EC249	EA
46	NUT-HEX, .875 9 NC G8	CAMERON	002-1529	EA
47	NUT-HEX, HVY .750 10 NC A194-2H	CAMERON	EN110	EA
48	CSCR SK .625 – 11 NC 2.50 G8	CAMERON	EC193	EA
49	CSCR SK .500 – 13 NC 1.50 G8	CAMERON	EC434	EA
50	Bolt HX .250 20NC 1.00 G8	CAMERON	081-4157	EA
51	Bolt HX .500 13 NC 1.50 G8	CAMERON	400-9753	EA
52	CSCR SK .500 – 13 NC 1.00 G8	CAMERON	124-3761	EA
53	Bolt HX .250 20NC .750 G8	CAMERON	081-0986	EA
54	CSCR SK .750 – 10 NC 2.50 G8	CAMERON	500-0295	EA
55	Fitting-Grease, .125 NPT 45″	CAMERON	018-4186	EA
56	PIN-COTTER, .188 X 1 1/4	CAMERON	EP418	EA
57	Washer-Flat, 0.750″ NAR	CAMERON	401-6046	EA
58	Washer-Flat, 0.375″ Wide	CAMERON	023-3042	EA
59	CSCR SK .313 – 18 NC 0.75 G8	CAMERON	EC438	EA
60	Bolt HX 1.250 7NC 18.00 G8	CAMERON	EB207	EA
61	Bolt 3U, 3/8-16 UNC X 1.75 ID	CAMERON	EB693	EA
62	Bolt HX .250 20C 2.500 G8	CAMERON	EB44	EA
63	Washer-Lock, 0.500″ SS	CAMERON	421-2699	EA
64	Bolt HX .750 10 NC 5.00 G8	CAMERON	EB208	EA
65	NUT-HEX, .250 20 NC G8	CAMERON	EN124	EA

6. On-Site Fault Maintenance Cases

Case 1: Loosening of Compressor Bolt Leading to Equipment Vibration

Scenario: A petrochemical plant’s Cameron centrifugal compressor (model: C301) experienced abnormal vibration during operation, with a vibration amplitude of 0.8mm (exceeding the standard 0.5mm). After inspection, it was found that the hex cap bolts (part number: 082-4790, M12×45 G8) connecting the compressor impeller were loose, and the lock washers (080-1181) were worn.

Solution: Replace the worn lock washers with new 080-1181 lock washers, re-tighten the 082-4790 bolts to the standard torque of 50N·m, and add a safety wire (EW109) for secondary anti-loosening. After maintenance, the equipment vibration amplitude was reduced to 0.3mm, meeting the operation standard.

Case 2: Corrosion of Pipeline Nut Causing Leakage

Scenario: An oilfield wellhead pipeline (equipped with Cameron valves) had a slight leakage at the flange connection. Inspection showed that the heavy hex nuts (part number: 002-5784, 1.5″ 6NC A194-2H) were corroded due to long-term exposure to salt spray, resulting in loose connection.

Solution: Replace the corroded 002-5784 nuts with new ones, clean the flange surface, and apply anti-corrosion sealant. The new nuts are made of high-corrosion-resistant material, passing the 1000-hour salt spray test. After replacement, the leakage problem was completely solved, and the connection remained intact after 6 months of operation.

Case 3: Thread Damage of Carriage Bolt Affecting Equipment Assembly

Scenario: During the maintenance of a Cameron reciprocating pump (model: P105), the carriage bolt (part number: EC287, 1.5″ 6NC 20.00 G8) could not be screwed in smoothly, and inspection found that the thread was stripped due to improper installation torque.

Solution: Replace the damaged EC287 bolt with a new one, use a torque wrench to control the installation torque within 80-90N·m, and check the thread fit before installation. After replacement, the bolt was installed smoothly, and the pump operated normally without abnormal noise.

7. FAQ (Frequently Asked Questions)

No.	Questions	Answers
1	Are these Cameron fasteners compatible with non-Cameron OEM equipment?	These fasteners are designed and manufactured according to Cameron OEM specifications, with precise dimensions and thread standards. While they may be compatible with some non-Cameron equipment with the same specifications, we recommend using them for Cameron equipment to ensure optimal performance and safety. It is recommended to confirm the equipment’s fastener specifications before procurement.
2	What is the difference between G8 grade and A194-2H grade fasteners in the list?	G8 grade is a high-strength bolt/nut grade, mainly used for general load-bearing scenarios, with a yield strength of ≥640MPa and ultimate tensile strength of ≥800MPa. A194-2H is a heavy hex nut grade, designed for high-pressure, high-temperature, and high-load scenarios (such as pipeline flanges), with higher impact resistance and fatigue strength, complying with ASTM A194 standards. For example, 002-5784 (A194-2H) is suitable for high-pressure pipeline connections, while 080-8489 (G8) is suitable for general equipment connections.
3	How to confirm the correct part number when purchasing fasteners for Cameron equipment maintenance?	You can confirm the part number through three ways: 1) Check the equipment’s original maintenance manual, which records the detailed part number of each fastener; 2) Remove the old fastener and check the part number marked on its surface (most Cameron fasteners have OEM part numbers engraved); 3) Provide the equipment model (e.g., Cameron C301 compressor, P105 pump) to our technical team, and we will match the corresponding fastener part number for you. This list covers 65 common part numbers, which can meet most Cameron equipment maintenance needs.

8. Procurement Guide & Technical Reference

8.1 Procurement Reference Standard

All fasteners in this list meet the following authoritative standards, ensuring product quality and compliance:

• ASTM A193: Standard Specification for Alloy-Steel and Stainless Steel Bolts, Studs, and Other Externally Threaded Fasteners for High-Temperature or High-Pressure Service.
• ASTM A194: Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both.
• ISO 898-1: Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel—Part 1: Bolts, Screws, and Studs.
• ANSI B18.2.1: Square and Hex Bolts and Screws.

When purchasing, you can use the part number, product description, or equipment model to confirm the required fasteners. The quantity of each part in the list is the recommended batch procurement quantity for general industrial plants, which can be adjusted according to actual maintenance and production needs.

8.2 Technical Problem Solution Reference

For common technical problems encountered in the use of Cameron fasteners, the following solutions are provided:

• Problem: Fastener loosening during equipment operation. Solution: Check whether the lock washer is intact, replace the worn lock washer, and tighten the bolt/nut to the standard torque; for high-vibration equipment, add a safety wire or lock nut for secondary fixing.
• Problem: Fastener corrosion. Solution: Replace the corroded fastener with a corrosion-resistant type (e.g., stainless steel washer 421-2699, zinc-plated washer 002-1542); strengthen daily cleaning and anti-rust maintenance.
• Problem: Thread jamming during installation. Solution: Check whether the thread is damaged or contaminated, clean the thread with a thread cleaner, and apply a small amount of lubricant; if the thread is severely damaged, replace the fastener.

8.3 Procurement Guidance

If you need to purchase the Cameron bolt and nut products listed above, you can directly select the required part numbers and quantities according to your equipment maintenance and production needs. All products are 100% OEM-manufactured, with complete quality inspection reports (including material composition analysis, mechanical property test, and corrosion test reports) to ensure product reliability. We provide comprehensive technical support, including product selection guidance, installation advice, and after-sales maintenance services, to help you solve all problems related to fasteners in equipment operation. Whether you need small-batch maintenance spare parts or large-batch procurement for production, we can provide high-quality products that meet your needs.