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S1K-1 — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S1K-1: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 2A STUD THREAD A, thread_length: 0.500 INCHES NOMINAL NUT THREAD IN, overall_length: 1.727 INCHES NOMINAL IN, locking_feature: RING, LOCK SERRATED, style_designator: LOCKED IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-944-6078, 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
S1K-1
NSN: 5307-00-944-6078
FSC: 5307 — Studs
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL
thread_class2A STUD THREAD A
thread_length0.500 INCHES NOMINAL NUT THREAD IN
overall_length1.727 INCHES NOMINAL IN
locking_featureRING, LOCK SERRATED
style_designatorLOCKED IN
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.375 INCHES STUD THREAD IN
thread_quantity_per_inch24 STUD THREAD
thread_series_designatorUNF STUD THREAD
distance_from_serrated_portion_to_nut_end0.790 INCHES NOMINAL IN
NSN5307-00-944-6078
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S1K-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
•
DISTANCE FROM SERRATED PORTION TO NUT END: 0.790 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES NOMINAL NUT THREAD IN
•
STYLE DESIGNATOR: LOCKED IN
•
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD: 0.156 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
TECHNICAL CHARACTERISTICS
DISTANCE FROM SERRATED PORTION TO NUT END0.790 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES NOMINAL NUT THREAD IN
THREAD LENGTH0.500 INCHES NOMINAL STUD THREAD IN
STYLE DESIGNATORLOCKED IN
OVERALL LENGTH1.727 INCHES NOMINAL IN
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD0.156 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.375 INCHES STUD THREAD IN
DISTANCE FROM SERRATED PORTION TO STUD END0.936 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
SUBSTITUTES & CROSS-REFERENCES 2
04052333003346Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SIK1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S1K-1?
S1K-1 is a STUD,LOCKED IN.
What parts can replace S1K-1?
There are 2 known substitutes for S1K-1: 04052333003346, SIK1. Substitute compatibility should be verified for your specific system.
What is the NSN for S1K-1?
S1K-1 is cataloged in the U.S. Government catalog under NSN 5307-00-944-6078. This indicates validated use in U.S. government and defense supply chains.
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