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Technical Data Sheet
PartsTable / COMPONENT / 2973855
2973855 ✓ 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, end_style: VERTEX CENTER OR ABOVE, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.140 INCHES NOMINAL IN, major_thickness: 0.174 INCHES NOMINAL 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 5325-01-107-3893, 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
2973855
NSN: 5325-01-107-3893
FSC: 5325
CAGE: 77060 — GENERAL MOTORS CORP PACKARD ELECTRIC DIV (USA)
SPECIFICATIONS
materialSTEEL
end_styleVERTEX CENTER OR ABOVE
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.140 INCHES NOMINAL IN
major_thickness0.174 INCHES NOMINAL IN
special_featuresRING HAS 2 BOLT HOLES
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-01-107-3893
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2973855 · 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
•
END STYLE: VERTEX CENTER OR ABOVE
•
RING STYLE: STRAIGHT GAP
•
USAGE DESIGN: EXTERNAL
•
MAJOR THICKNESS: 0.174 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
INSIDE DIAMETER: 0.140 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
END STYLEVERTEX CENTER OR ABOVE
SPECIAL FEATURESRING HAS 2 BOLT HOLES
RING STYLESTRAIGHT GAP
USAGE DESIGNEXTERNAL
MAJOR THICKNESS0.174 INCHES NOMINAL IN
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
INSIDE DIAMETER0.140 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
15784Interchangeable
interchangeable cross-reference
interchangeable
A-A-58076 CL2STAInterchangeable
interchangeable cross-reference
interchangeable
MIL-H-4081Interchangeable
interchangeable cross-reference
interchangeable
683RH-1/2-1/2SInterchangeable
interchangeable cross-reference
interchangeable
55257Interchangeable
interchangeable cross-reference
interchangeable
SF-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2973855?
2973855 is a RING,RETAINING.
What parts can replace 2973855?
There are 15 known substitutes for 2973855: 15784, A-A-58076 CL2STA, MIL-H-4081 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2973855?
2973855 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-107-3893. 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