PartsTable
Technical Data Sheet
Download PDF

34003-42 — STUD,SELF-LOCKING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

34003-42: STUD,SELF-LOCKING.

The STUD,SELF-LOCKING is a the manufacturer industrial component. Key specifications include head_length: 0.383 INCHES NOMINAL IN, thread_class: 3A NUT THREAD A, style_designator: SELF-LOCKING, thread_direction: RIGHT-HAND NUT THREAD, nominal_thread_size: 0.375 INCHES NUT THREAD IN, distance_across_flats: 0.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-137-9491, 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
34003-42
NSN: 5307-01-137-9491
FSC: 5307 — Studs
CAGE: 0KHZ6 — KINEDYNE LLC (USA)
SPECIFICATIONS
head_length0.383 INCHES NOMINAL IN
thread_class3A NUT THREAD A
style_designatorSELF-LOCKING
thread_directionRIGHT-HAND NUT THREAD
nominal_thread_size0.375 INCHES NUT THREAD IN
distance_across_flats0.625 INCHES NOMINAL IN
thread_quantity_per_inch24 NUT THREAD
thread_series_designatorUNF NUT THREAD
NSN5307-01-137-9491
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 34003-42 · 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
•
STYLE DESIGNATOR: SELF-LOCKING
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
NOMINAL THREAD SIZE: 0.375 INCHES NUT THREAD IN
•
HEAD LENGTH: 0.383 INCHES NOMINAL IN
•
THREAD CLASS: 3A NUT THREAD A
•
THREAD QUANTITY PER INCH: 24 NUT THREAD
•
DISTANCE ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF NUT THREAD
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSELF-LOCKING
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.375 INCHES NUT THREAD IN
HEAD LENGTH0.383 INCHES NOMINAL IN
THREAD CLASS3A NUT THREAD A
THREAD QUANTITY PER INCH24 NUT THREAD
DISTANCE ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF NUT THREAD
SUBSTITUTES & CROSS-REFERENCES 2
34003-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
34003A08B01Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 34003-42?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 34003-42?
34003-42 is a STUD,SELF-LOCKING.
What parts can replace 34003-42?
There are 2 known substitutes for 34003-42: 34003-2, 34003A08B01. Substitute compatibility should be verified for your specific system.
What is the NSN for 34003-42?
34003-42 is cataloged in the U.S. Government catalog under NSN 5307-01-137-9491. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 34003-42

✓ 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.