PartsTable
Technical Data Sheet
Download PDF

881B5MBH750 — STUD,LOCKED IN

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

881B5MBH750: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 3A STUD THREAD A, thread_length: 0.547 INCHES MINIMUM NUT THREAD IN, overall_length: 0.750 INCHES NOMINAL IN, locking_feature: RING, LOCK KEYED, style_designator: LOCKED IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-672-3894, 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
881B5MBH750
NSN: 5307-01-672-3894
FSC: 5307 — Studs
CAGE: 75237 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV MICRODOT PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL
thread_class3A STUD THREAD A
thread_length0.547 INCHES MINIMUM NUT THREAD IN
overall_length0.750 INCHES NOMINAL IN
locking_featureRING, LOCK KEYED
style_designatorLOCKED IN
thread_directionRIGHT-HAND STUD THREAD
nominal_thread_size0.375 INCHES STUD THREAD IN
end_item_identification1520-01-457-5179
thread_quantity_per_inch16 STUD THREAD
thread_series_designatorUNF NUT THREAD
distance_from_serrated_portion_to_nut_end0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
NSN5307-01-672-3894
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 881B5MBH750 · 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: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.547 INCHES MINIMUM NUT THREAD IN
•
STYLE DESIGNATOR: LOCKED IN
•
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD: 0.040 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
NOMINAL THREAD SIZE: 0.375 INCHES STUD THREAD IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM SERRATED PORTION TO NUT END0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
THREAD LENGTH0.547 INCHES MINIMUM NUT THREAD IN
STYLE DESIGNATORLOCKED IN
OVERALL LENGTH0.750 INCHES NOMINAL IN
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD0.040 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
NOMINAL THREAD SIZE0.375 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.3125 INCHES NUT THREAD IN
DISTANCE FROM SERRATED PORTION TO STUD END0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN
LOCKING FEATURERING, LOCK KEYED
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 1
881B5MBH7Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 881B5MBH750?
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 881B5MBH750?
881B5MBH750 is a STUD,LOCKED IN.
What parts can replace 881B5MBH750?
There is 1 known substitute for 881B5MBH750: 881B5MBH7. Substitute compatibility should be verified for your specific system.
What is the NSN for 881B5MBH750?
881B5MBH750 is cataloged in the U.S. Government catalog under NSN 5307-01-672-3894. 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 — 881B5MBH750

✓ 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.