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Technical Data Sheet
PartsTable / COMPONENT / 649778
649778 ✓ 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

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL COMP 410, overall_height: 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN, style_designator: IRREGULAR, surface_treatment: PASSIVATE, body_inside_diameter: 1.060 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN, body_outside_diameter: 1.087 INCHES MINIMUM AND 1.100 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 5325-00-229-1196, 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
649778
NSN: 5325-00-229-1196
FSC: 5325
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 410
overall_height0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
style_designatorIRREGULAR
surface_treatmentPASSIVATE
body_inside_diameter1.060 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN
body_outside_diameter1.087 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN
mounting_hole_diameter0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating35.0 ROCKWELL C MINIMUM
material_document_and_classificationAMS 5504 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-229-1196
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 649778 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
500-3490-6Interchangeable
interchangeable cross-reference
interchangeable
UT9035Interchangeable
interchangeable cross-reference
interchangeable
3490Interchangeable
interchangeable cross-reference
interchangeable
18270Interchangeable
interchangeable cross-reference
interchangeable
3249634Interchangeable
interchangeable cross-reference
interchangeable
5305009585481Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 649778?
649778 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 649778?
There are 10 known substitutes for 649778: 500-3490-6, UT9035, 3490 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 649778?
649778 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-229-1196. 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