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PartsTable / COMPONENT / GR540CG1C
GR540CG1C ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302, ring_style: SPIRAL ROUND, usage_design: EXTERNAL, overlap_length: 0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, inside_diameter: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, outside_diameter: 0.714 INCHES MINIMUM AND 0.764 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-059-6276, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
GR540CG1C
NSN: 5325-01-059-6276
FSC: 5325
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 302
ring_styleSPIRAL ROUND
usage_designEXTERNAL
overlap_length0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
inside_diameter0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
outside_diameter0.714 INCHES MINIMUM AND 0.764 INCHES MAXIMUM IN
material_diameter0.052 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationQQ-W-423, 302 FED SPEC SINGLE MATERIAL RESPONSE
NSN5325-01-059-6276
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GR540CG1C · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERLAP LENGTH: 0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL COMP 302
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423, 302 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL DIAMETER: 0.052 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
•
RING STYLE: SPIRAL ROUND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
INSIDE DIAMETER: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERLAP LENGTH0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL COMP 302
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423, 302 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL DIAMETER0.052 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
RING STYLESPIRAL ROUND
CASEHARDENING INDICATORNOT CASEHARDENED
INSIDE DIAMETER0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.714 INCHES MINIMUM AND 0.764 INCHES MAXIMUM IN
USAGE DESIGNEXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
7CRInterchangeable
interchangeable cross-reference
interchangeable
B107.500 CAT 24 TY1CL2STAInterchangeable
interchangeable cross-reference
interchangeable
B107.500Interchangeable
interchangeable cross-reference
interchangeable
875681-00TInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GR540CG1C?
GR540CG1C is a RING,RETAINING.
What parts can replace GR540CG1C?
There are 4 known substitutes for GR540CG1C: 7CR, B107.500 CAT 24 TY1CL2STA, B107.500 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GR540CG1C?
GR540CG1C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-059-6276. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026