SM-B-186981 — COLLAR,SHAFT

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

SM-B-186981: COLLAR,SHAFT.

The COLLAR,SHAFT is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.344 INCHES NOMINAL IN, securing_hole_type_and_location: THREADED ALL HOLES, screw_thread_series_designator_and_location: ALL HOLES UNF, angle_between_centerlines_of_securing_holes_in_deg: 180.0. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-322-5580, 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

SM-B-186981

NSN: 3040-00-322-5580
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)

SPECIFICATIONS

material	STEEL
thickness	0.344 INCHES NOMINAL IN
securing_hole_quantity	2
securing_hole_type_and_location	THREADED ALL HOLES
screw_thread_series_designator_and_location	ALL HOLES UNF
angle_between_centerlines_of_securing_holes_in_deg	180.0
NSN	3040-00-322-5580

COMPONENT DIAGRAM

KEY FEATURES

•

SECURING HOLE TYPE AND LOCATION: THREADED ALL HOLES

•

SCREW THREAD SERIES DESIGNATOR AND LOCATION: ALL HOLES UNF

•

ANGLE BETWEEN CENTERLINES OF SECURING HOLES IN DEG: 180.0

•

SECURING HOLE QUANTITY: 2

•

MATERIAL: STEEL

•

THICKNESS: 0.344 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

SECURING HOLE TYPE AND LOCATION	THREADED ALL HOLES
SCREW THREAD SERIES DESIGNATOR AND LOCATION	ALL HOLES UNF
ANGLE BETWEEN CENTERLINES OF SECURING HOLES IN DEG	180.0
SECURING HOLE QUANTITY	2
MATERIAL	STEEL
THICKNESS	0.344 INCHES NOMINAL IN

SUBSTITUTES & CROSS-REFERENCES 1

54927Reference 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 SM-B-186981?

SM-B-186981 is a COLLAR,SHAFT.

What parts can replace SM-B-186981?

There is 1 known substitute for SM-B-186981: 54927. Substitute compatibility should be verified for your specific system.

What is the NSN for SM-B-186981?

SM-B-186981 is cataloged in the U.S. Government catalog under NSN 3040-00-322-5580. This indicates validated use in U.S. government and defense supply chains.

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SM-B-186981 — COLLAR,SHAFT

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