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3993961 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3993961: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include head_style: ROUND, end_item_identification: F-35 AIRCRAFT SUPPORT EQUIPMENT, part_name_assigned_by_controlling_agency: BOLT. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-671-1220, 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
3993961
NSN: 5306-01-671-1220
FSC: 5306 — Bolts
CAGE: 4J007 — MSC INDUSTRIAL DIRECT CO., INC. (USA)
SPECIFICATIONS
head_styleROUND
end_item_identificationF-35 AIRCRAFT SUPPORT EQUIPMENT
part_name_assigned_by_controlling_agencyBOLT
NSN5306-01-671-1220
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3993961 · 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 STYLE: ROUND
TECHNICAL CHARACTERISTICS
HEAD STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT
END ITEM IDENTIFICATIONF-35 AIRCRAFT SUPPORT EQUIPMENT
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
MMS-24Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 3993961?
3993961 is a BOLT,SHOULDER.
What parts can replace 3993961?
There is 1 known substitute for 3993961: MMS-24. Substitute compatibility should be verified for your specific system.
What is the NSN for 3993961?
3993961 is cataloged in the U.S. Government catalog under NSN 5306-01-671-1220. This indicates validated use in U.S. government and defense supply chains.
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