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9900-161 — GEAR,SPUR

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

9900-161: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include teeth_quantity: 150, special_features: MATERIAL:CARBON STEEL(AISI 1137-1144); MATES WITH PART NUMBER 99-00156; USED ON PL99-00150, thread_series_designator: UNIFIED NATIONAL COARSE (UNC) BETWEEN BODY AND FLANGE, part_name_assigned_by_controlling_agency: GEAR, DIAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-555-8174, 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
9900-161
NSN: 4820-00-555-8174
NIINs: 005558174, 015927086
FSC: 4820 — Valves, Nonpowered
CAGE: 31361 — WOODWARD, INC. (USA)
SPECIFICATIONS
teeth_quantity150
special_featuresMATERIAL:CARBON STEEL(AISI 1137-1144); MATES WITH PART NUMBER 99-00156; USED ON PL99-00150
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) BETWEEN BODY AND FLANGE
part_name_assigned_by_controlling_agencyGEAR, DIAL
NSN4820-00-555-8174
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9900-161 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONAPPD ECP K007 NEW FUEL METERING VALVE ASSEMBLY
SUBSTITUTES & CROSS-REFERENCES 3
6878375Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9900-173ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9900-173BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9900-161?
9900-161 is a GEAR,SPUR.
What parts can replace 9900-161?
There are 3 known substitutes for 9900-161: 6878375, 9900-173A, 9900-173B. Substitute compatibility should be verified for your specific system.
What is the NSN for 9900-161?
9900-161 is cataloged in the U.S. Government catalog under NSN 4820-00-555-8174. 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.