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NNSN97-66-983 — LOCKING DEVISE VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NNSN97-66-983: LOCKING DEVISE VALVE.

The LOCKING DEVISE VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-00-150-6176, 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
NNSN97-66-983
NSN: 4820-00-150-6176
FSC: 4820 — Valves, Nonpowered
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
Part NumberNNSN97-66-983
NSN4820-00-150-6176
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NNSN97-66-983 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: CONSISTS OF PC TWO TO FIVE NAMEPLATE LOCKED CLOSED,MATL SPEC QQ-N-281,LEVER LOCK,MATL SPEC QQ-N-281,WASHER FLAT PLAIN NO 6 MATL SPEC FF-W-92,RIVET RD HD 0.125 IN. DIA 0.500 IN. LG MATL ALUMINUM,USED ONLOCKING DEVICES FOR E.B. STD AND COMMERCIAL VALVES IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCONSISTS OF PC TWO TO FIVE NAMEPLATE LOCKED CLOSED,MATL SPEC QQ-N-281,LEVER LOCK,MATL SPEC QQ-N-281,WASHER FLAT PLAIN NO 6 MATL SPEC FF-W-92,RIVET RD HD 0.125 IN. DIA 0.500 IN. LG MATL ALUMINUM,USED ONLOCKING DEVICES FOR E.B. STD AND COMMERCIAL VALVES IN
SUBSTITUTES & CROSS-REFERENCES 6
62-97-4138ASSYBEReference document
Same NSN cross-reference
Reference document — Secondary reference
1889758 PCS 2-5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
845-1889758Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
255407 ASSY B (LOCKED CLOSED)Reference document
Same NSN cross-reference
Reference document — Secondary reference
2640-009ASSYBEPC2T05Reference document
Same NSN cross-reference
Reference document — Secondary reference
255407Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NNSN97-66-983?
NNSN97-66-983 is a LOCKING DEVISE VALVE.
What parts can replace NNSN97-66-983?
There are 6 known substitutes for NNSN97-66-983: 62-97-4138ASSYBE, 1889758 PCS 2-5, 845-1889758 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NNSN97-66-983?
NNSN97-66-983 is cataloged in the U.S. Government catalog under NSN 4820-00-150-6176. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.