PartsTable
Technical Data Sheet
Download PDF

C28700-38 — STUD,SELF-LOCKING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

C28700-38: STUD,SELF-LOCKING.

The STUD,SELF-LOCKING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1015 OR STEEL COMP 1020 OR STEEL COMP 1025, head_length: 0.177 INCHES NOMINAL IN, thread_class: 2A NUT THREAD A, head_diameter: 0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN, thread_length: 0.543 INCHES MINIMUM AND 0.583 INCHES MAXIMUM NUT THREAD IN, overall_length: 0.782 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-177-7729, 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
C28700-38
NSN: 5307-00-177-7729
FSC: 5307 — Studs
CAGE: 42498 — DAR ELECTRONICS INC DBA NATIONAL RADIO CO (USA)
SPECIFICATIONS
materialSTEEL COMP 1015 OR STEEL COMP 1020 OR STEEL COMP 1025
head_length0.177 INCHES NOMINAL IN
thread_class2A NUT THREAD A
head_diameter0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
thread_length0.543 INCHES MINIMUM AND 0.583 INCHES MAXIMUM NUT THREAD IN
overall_length0.782 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
locking_featureSELF-CLINCHING HEAD
style_designatorSELF-LOCKING
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.164 INCHES NUT THREAD IN
distance_across_flats0.295 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
NSN5307-00-177-7729
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C28700-38 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 171,5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.543 INCHES MINIMUM AND 0.583 INCHES MAXIMUM NUT THREAD IN
•
STYLE DESIGNATOR: SELF-LOCKING
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
NOMINAL THREAD SIZE: 0.164 INCHES NUT THREAD IN
•
HEAD LENGTH: 0.177 INCHES NOMINAL IN
•
LOCKING FEATURE: SELF-CLINCHING HEAD
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION171,5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.543 INCHES MINIMUM AND 0.583 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATORSELF-LOCKING
OVERALL LENGTH0.782 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE0.164 INCHES NUT THREAD IN
HEAD LENGTH0.177 INCHES NOMINAL IN
LOCKING FEATURESELF-CLINCHING HEAD
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A NUT THREAD A
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 4
NC58-6-20Reference document
Same NSN cross-reference
Reference document — Secondary reference
950278-109Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
NCS8-6-20Reference document
Same NSN cross-reference
Reference document — Secondary reference
58S(0.187)-ST-20ARReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy C28700-38?
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 C28700-38?
C28700-38 is a STUD,SELF-LOCKING.
What parts can replace C28700-38?
There are 4 known substitutes for C28700-38: NC58-6-20, 950278-109, NCS8-6-20 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C28700-38?
C28700-38 is cataloged in the U.S. Government catalog under NSN 5307-00-177-7729. 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 — C28700-38

✓ 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.