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Technical Data Sheet
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JSFB21E4-4-16 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

JSFB21E4-4-16: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5306-01-665-9995, 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
JSFB21E4-4-16
NSN: 5306-01-665-9995
FSC: 5306 — Bolts
CAGE: 06725 — SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY (USA)
SPECIFICATIONS
Part NumberJSFB21E4-4-16
NSN5306-01-665-9995
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: JSFB21E4-4-16 · 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
SUBSTITUTES & CROSS-REFERENCES 1
JSFB21Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 JSFB21E4-4-16?
JSFB21E4-4-16 is a BOLT,SHOULDER.
What parts can replace JSFB21E4-4-16?
There is 1 known substitute for JSFB21E4-4-16: JSFB21. Substitute compatibility should be verified for your specific system.
What is the NSN for JSFB21E4-4-16?
JSFB21E4-4-16 is cataloged in the U.S. Government catalog under NSN 5306-01-665-9995. This indicates validated use in U.S. government and defense supply chains.
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