PartsTable TECHNICAL DATA SHEET

NSN 4240-00-300-6901Government record, cited

Retainer, Diaphragm4240-00-300-6901

NSN 4240-00-300-6901 · NIIN 003006901

FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment

Government record, cited

Also searched as 4240-00-300-6901 · 4240003006901 · NIIN 003006901 · 00-300-6901 · FSC 4240 Safety and Rescue Equipment · 16528 · S9300-921873PC125

Nearby stock numbers ← 4240-00-300-6458 H0se · 4240-00-300-6902 Spacer, Diaphragm →

Features

Retainer,diaphragm — FSC 4240

Identification

NSN: 4240-00-300-6901
NIIN: 003006901
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment

General Description

The Retainer,diaphragm, cataloged under National Stock Number 4240-00-300-6901, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Retainer,diaphragm
FSC / FSG	4240 — Safety and Rescue Equipment (FSG 42)

Technical Specifications

Parameter	Value
NSN	4240-00-300-6901
Item Name	Retainer,diaphragm
FSC / FSG	4240 / 42 — Safety and Rescue Equipment
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)

⇄ Related Items 3

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5935-00-502-25328499317 POSSIBLE MATCH

CONNECTOR,RECEPTACLE,ELECTRICAL

Possible match (shared part number)Us Army Aviation and Missile Command

4820-01-280-4409 POSSIBLE MATCH

DISK,VALVE

Possible match (shared part number)

6515-01-589-8196226.591 POSSIBLE MATCH

BONE PLATE

Possible match (shared part number)Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma

Cross-Reference Index

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

Reference documents

Reference	Meaning
16528	5/9 Secondary reference Mine Safety Appliances Company
S9300-921873PC125	3/2 Design control — primary reference U.S. Government activity

Related Parts

5935-00-502-2532POSSIBLE MATCH

CONNECTOR,RECEPTACLE,ELECTRICAL

8499317

4820-01-280-4409POSSIBLE MATCH

DISK,VALVE

6515-01-589-8196POSSIBLE MATCH

BONE PLATE

226.591

Frequently Asked Questions

What is NSN 4240-00-300-6901?

NSN 4240-00-300-6901 is a Retainer,diaphragm, classified under FSC 4240, Safety and Rescue Equipment. Status: active.

What NSN replaces 4240-00-300-6901?

3 possible matches (shared part number, not a government interchangeability claim): 5935-00-502-2532, 4820-01-280-4409, 6515-01-589-8196. Verify interchangeability with system specifications before substitution.

Is NSN 4240-00-300-6901 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). 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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