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SM4981 — STUD,SHOULDERED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SM4981: STUD,SHOULDERED.

The STUD,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303S, thread_class: 2A STUD THREAD A, thread_length: 0.375 INCHES NOMINAL STUD THREAD IN, overall_length: 1.531 INCHES NOMINAL IN, shoulder_length: 0.094 INCHES NOMINAL IN, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-721-5690, 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
SM4981
NSN: 5307-00-721-5690
FSC: 5307 — Studs
CAGE: 80249 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 303S
thread_class2A STUD THREAD A
thread_length0.375 INCHES NOMINAL STUD THREAD IN
overall_length1.531 INCHES NOMINAL IN
shoulder_length0.094 INCHES NOMINAL IN
style_designatorSHOULDERED
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.190 INCHES NUT THREAD IN
nut_end_shank_length0.187 INCHES NOMINAL IN
distance_across_flats0.312 INCHES NOMINAL IN
stud_end_shank_length0.406 INCHES NOMINAL IN
NSN5307-00-721-5690
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SM4981 · 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
•
NUT END SHANK DIAMETER: 0.190 INCHES NOMINAL IN
•
THREAD LENGTH: 0.375 INCHES NOMINAL STUD THREAD IN
•
STYLE DESIGNATOR: SHOULDERED
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.190 INCHES NUT THREAD IN
TECHNICAL CHARACTERISTICS
NUT END SHANK DIAMETER0.190 INCHES NOMINAL IN
THREAD LENGTH0.375 INCHES NOMINAL STUD THREAD IN
THREAD LENGTH0.469 INCHES NOMINAL NUT THREAD IN
STYLE DESIGNATORSHOULDERED
OVERALL LENGTH1.531 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.190 INCHES NUT THREAD IN
NOMINAL THREAD SIZE0.190 INCHES STUD THREAD IN
STUD END SHANK DIAMETER0.190 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
4072801-1Same 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 SM4981?
SM4981 is a STUD,SHOULDERED.
What parts can replace SM4981?
There is 1 known substitute for SM4981: 4072801-1. Substitute compatibility should be verified for your specific system.
What is the NSN for SM4981?
SM4981 is cataloged in the U.S. Government catalog under NSN 5307-00-721-5690. 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.