Valve, Vent3040-01-153-9441

NSN 3040-01-153-9441 · NIIN 011539441

FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment

Government record, cited

Also searched as 3040-01-153-9441 · 3040011539441 · NIIN 011539441 · 01-153-9441 · FSC 3040 Miscellaneous Power Transmission Equipment · 87832-1647 · 37-21-7808 · 4684918-0014 · 709-4684918 · 218120911

Nearby stock numbers ← 3040-01-153-8837 Cylinder, Actuating, Linear · 3040-01-153-9463 Lever, Manual Control →

Features

Valve,vent — FSC 3040
General Characteristics Item Description: BRASS,QQ-B-637,ALY 464,1/2 H; ROUND TYPE; BAR 0.500 IN. SIZE; 0.810 IN. LG; 0.375-24 UNF 2A THD; THD 0.440 IN. LG; INSIDE HEX W 0.188 IN. MIN 0.191 IN. MAX; OPPOSITE END 0.062 IN. DIA A

Identification

NSN: 3040-01-153-9441
NIIN: 011539441
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Valve,vent, cataloged under National Stock Number 3040-01-153-9441, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3040-01-153-9441
Item Name	Valve,vent
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Status	ACTIVE
General Characteristics Item Description	BRASS,QQ-B-637,ALY 464,1/2 H; ROUND TYPE; BAR 0.500 IN. SIZE; 0.810 IN. LG; 0.375-24 UNF 2A THD; THD 0.440 IN. LG; INSIDE HEX W 0.188 IN. MIN 0.191 IN. MAX; OPPOSITE END 0.062 IN. DIA A

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
87832-1647	D/9 Drawing number reference only U.S. Government activity
37-21-7808	5/9 Secondary reference U.S. Government activity
4684918-0014	5/9 Secondary reference U.S. Government activity
709-4684918	D/9 Drawing number reference only U.S. Government activity
218120911	3/2 Design control — primary reference U.S. Government activity
709-4684918 ITEM 14	3/2 Design control — primary reference U.S. Government activity

Frequently Asked Questions

What is NSN 3040-01-153-9441?

NSN 3040-01-153-9441 is a Valve,vent, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What are the specifications of 3040-01-153-9441?

Key specifications for 3040-01-153-9441: General Characteristics Item Description: BRASS,QQ-B-637,ALY 464,1/2 H; ROUND TYPE; BAR 0.500 IN. SIZE; 0.810 IN. LG; 0.375-24 UNF 2A THD; THD 0.440 IN. LG; INSIDE HEX W 0.188 IN. MIN 0.191 IN. MAX; OPPOSITE END 0.062 IN. DIA A. 1 specification is documented in the U.S. Government catalog.

Is NSN 3040-01-153-9441 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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