MIL-B-7874 — BOLT,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

MIL-B-7874: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: HEXAGON, grip_length: 1.734 INCHES MINIMUM AND 1.766 INCHES MAXIMUM IN, head_height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.516 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-721-5857, 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

MIL-B-7874

NSN: 5306-00-721-5857
NIINs: 007215857, 007541794, 013757124
FSC: 5306 — Bolts
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
head_style	HEXAGON
grip_length	1.734 INCHES MINIMUM AND 1.766 INCHES MAXIMUM IN
head_height	0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
thread_class	3A A
thread_length	0.516 INCHES NOMINAL IN
fastener_length	2.250 INCHES MINIMUM AND 2.297 INCHES MAXIMUM IN
special_features	TEMP RATING 1200 DEGREES FAHRENHEIT
thread_direction	RIGHT-HAND
width_between_flats	0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
nominal_thread_diameter	0.250 INCHES IN
minimum_tensile_strength	5400 POUNDS PER SQUARE INCH LBS
NSN	5306-00-721-5857

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN

•

FASTENER LENGTH: 1.297 INCHES NOMINAL IN

•

THREAD LENGTH: 0.422 INCHES MINIMUM IN

•

HARDNESS RATING: 27.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

FEATURES PROVIDED: FINISHED HEAD

•

HEAD STYLE: HEXAGON

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
FASTENER LENGTH	1.297 INCHES NOMINAL IN
THREAD LENGTH	0.422 INCHES MINIMUM IN
HARDNESS RATING	27.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
FEATURES PROVIDED	FINISHED HEAD
HEAD STYLE	HEXAGON
THREAD DIRECTION	RIGHT-HAND
GRIP LENGTH	0.875 INCHES NOMINAL IN
WIDTH BETWEEN FLATS	0.365 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 2

MS20033-7Reference document

Same NSN cross-reference

Reference document — Secondary reference

NASM7874Reference document

Same NSN cross-reference

Reference document — Design control — primary 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 MIL-B-7874?

MIL-B-7874 is a BOLT,MACHINE.

What parts can replace MIL-B-7874?

There are 2 known substitutes for MIL-B-7874: MS20033-7, NASM7874. Substitute compatibility should be verified for your specific system.

What is the NSN for MIL-B-7874?

MIL-B-7874 is cataloged in the U.S. Government catalog under NSN 5306-00-721-5857. This indicates validated use in U.S. government and defense supply chains.

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