999F0937 FN 81 — KEY,MACHINE

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

999F0937 FN 81: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, overall_width: 0.312 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, overall_length: 1.750 INCHES NOMINAL IN, style_designator: PLAIN, end_item_identification: 4-TDHB-6 PUMP. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-651-4939, 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

999F0937 FN 81

NSN: 5315-01-651-4939
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)

SPECIFICATIONS

material	NICKEL ALLOY OVERALL
overall_width	0.312 INCHES NOMINAL IN
overall_height	0.312 INCHES NOMINAL IN
overall_length	1.750 INCHES NOMINAL IN
style_designator	PLAIN
end_item_identification	4-TDHB-6 PUMP
part_name_assigned_by_controlling_agency	KEY,5/16SQ X 1-3/4LG
NSN	5315-01-651-4939

COMPONENT DIAGRAM

KEY FEATURES

•

STYLE DESIGNATOR: PLAIN

•

MATERIAL: NICKEL ALLOY OVERALL

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.312 INCHES NOMINAL IN
STYLE DESIGNATOR	PLAIN
OVERALL LENGTH	1.750 INCHES NOMINAL IN
OVERALL WIDTH	0.312 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCY	KEY,5/16SQ X 1-3/4LG
END ITEM IDENTIFICATION	4-TDHB-6 PUMP
MATERIAL	NICKEL ALLOY OVERALL

OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602

SUBSTITUTES & CROSS-REFERENCES 1

PL-999F0937 FN 81Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 999F0937 FN 81?

999F0937 FN 81 is a KEY,MACHINE.

What parts can replace 999F0937 FN 81?

There is 1 known substitute for 999F0937 FN 81: PL-999F0937 FN 81. Substitute compatibility should be verified for your specific system.

What is the NSN for 999F0937 FN 81?

999F0937 FN 81 is cataloged in the U.S. Government catalog under NSN 5315-01-651-4939. This indicates validated use in U.S. government and defense supply chains.

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