878B-6MC-12 — STUD,LOCKED IN

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

878B-6MC-12: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140, thread_class: 3A NUT THREAD A, thread_length: 0.510 INCHES NOMINAL STUD THREAD IN, overall_length: 1.812 INCHES NOMINAL IN, locking_feature: RING, LOCK SERRATED, style_designator: LOCKED IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-809-3951, 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

878B-6MC-12

NSN: 5307-00-809-3951
FSC: 5307 — Studs
CAGE: 75237 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV MICRODOT PRODUCTS (USA)

SPECIFICATIONS

material	STEEL COMP 4140
thread_class	3A NUT THREAD A
thread_length	0.510 INCHES NOMINAL STUD THREAD IN
overall_length	1.812 INCHES NOMINAL IN
locking_feature	RING, LOCK SERRATED
style_designator	LOCKED IN
thread_direction	RIGHT-HAND STUD THREAD
surface_treatment	CADMIUM OVERALL
nominal_thread_size	0.625 INCHES STUD THREAD IN
thread_quantity_per_inch	11 STUD THREAD
thread_series_designator	UNIFIED NATIONAL COARSE (UNC) STUD THREAD
material_document_and_classification	MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE
NSN	5307-00-809-3951

COMPONENT DIAGRAM

KEY FEATURES

•

DISTANCE FROM SERRATED PORTION TO NUT END: 1.250 INCHES NOMINAL IN

•

THREAD LENGTH: 0.510 INCHES NOMINAL STUD THREAD IN

•

STYLE DESIGNATOR: LOCKED IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE

•

DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD: 0.052 INCHES NOMINAL IN

•

THREAD DIRECTION: RIGHT-HAND STUD THREAD

TECHNICAL CHARACTERISTICS

DISTANCE FROM SERRATED PORTION TO NUT END	1.250 INCHES NOMINAL IN
THREAD LENGTH	0.510 INCHES NOMINAL STUD THREAD IN
THREAD LENGTH	0.625 INCHES NOMINAL NUT THREAD IN
STYLE DESIGNATOR	LOCKED IN
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH	1.812 INCHES NOMINAL IN
DISTANCE FROM SERRATED PORTION TO END OF STUD THREAD	0.052 INCHES NOMINAL IN
THREAD DIRECTION	RIGHT-HAND STUD THREAD
THREAD DIRECTION	RIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE	0.625 INCHES STUD THREAD 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 1

S2610-6A920AReference 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

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FREQUENTLY ASKED QUESTIONS

What is 878B-6MC-12?

878B-6MC-12 is a STUD,LOCKED IN.

What parts can replace 878B-6MC-12?

There is 1 known substitute for 878B-6MC-12: S2610-6A920A. Substitute compatibility should be verified for your specific system.

What is the NSN for 878B-6MC-12?

878B-6MC-12 is cataloged in the U.S. Government catalog under NSN 5307-00-809-3951. This indicates validated use in U.S. government and defense supply chains.

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