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371670-1 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

371670-1: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4340 OVERALL, head_style: DEE CHAMFER, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 1.625 INCHES NOMINAL IN, thread_length: 0.930 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-612-3740, 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
371670-1
NSN: 5306-00-612-3740
FSC: 5306 — Bolts
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4340 OVERALL
head_styleDEE CHAMFER
head_height0.250 INCHES NOMINAL IN
thread_class3A A
head_diameter1.625 INCHES NOMINAL IN
thread_length0.930 INCHES NOMINAL IN
fastener_length2.940 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_diameter0.750 INCHES IN
thread_quantity_per_inch3A A
thread_series_designatorUNF
NSN5306-00-612-3740
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 371670-1 · 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: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.940 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.746 INCHES NOMINAL IN
•
THREAD LENGTH: 0.930 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: DEE CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH2.940 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO FLAT0.746 INCHES NOMINAL IN
THREAD LENGTH0.930 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEDEE CHAMFER
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS3A A
THREAD QUANTITY PER INCH3A A
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES 1
5306PL2178762Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 371670-1?
371670-1 is a BOLT,SHOULDER.
What parts can replace 371670-1?
There is 1 known substitute for 371670-1: 5306PL2178762. Substitute compatibility should be verified for your specific system.
What is the NSN for 371670-1?
371670-1 is cataloged in the U.S. Government catalog under NSN 5306-00-612-3740. 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.