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9439771 — BOLT,ASSEMBLED WASHER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

9439771: BOLT,ASSEMBLED WASHER.

The BOLT,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.448 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN, fastener_length: 0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-157-6796, 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
9439771
NSN: 5306-01-157-6796
FSC: 5306 — Bolts
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_class3A A
thread_length0.448 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
fastener_length0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM PRIMARY WASHER
washer_quantity1
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE ZINC OVERALL
width_between_flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
primary_washer_styleSPRING TENSION
NSN5306-01-157-6796
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 9439771 · 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
•
HEAD HEIGHT: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: G-6111-M(400),FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.448 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM PRIMARY WASHER
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES PRIMARY WASHER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH0.590 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONG-6111-M(400),FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL
PRIMARY WASHER OUTSIDE DIAMETER0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
THREAD LENGTH0.448 INCHES MINIMUM AND 0.550 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM PRIMARY WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES PRIMARY WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONG-275-M,FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE FASTENER
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
9433256Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9439771?
9439771 is a BOLT,ASSEMBLED WASHER.
What parts can replace 9439771?
There is 1 known substitute for 9439771: 9433256. Substitute compatibility should be verified for your specific system.
What is the NSN for 9439771?
9439771 is cataloged in the U.S. Government catalog under NSN 5306-01-157-6796. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.