PartsTable TECHNICAL DATA SHEET

NSN 5330-00-239-0658Government record, cited

Gasket5330-00-239-0658

NSN 5330-00-239-0658 · NIIN 002390658 · Part number B1440

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · FSC 5330 — Packing and Gasket Materials · FSG 53 — Hardware and Abrasives · CAGE 61208

Government record, cited

NSN 5330-00-239-0658 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-239-0658. Manufacturer of record part number: B1440.

Also searched as 5330-00-239-0658 · 5330002390658 · NIIN 002390658 · 00-239-0658 · FSC 5330 Packing and Gasket Materials · CAGE 61208 · B1440

Nearby stock numbers ← 5330-00-239-0657 Gasket · 5330-00-239-0659 →

5330-00-239-0658 — Packing and Gasket Materials

Features

Gasket — FSC 5330
Cross-Sectional Thickness: 0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
Style Designator: CIRCULAR
Material Document and Classification: AMS 3250 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION
Outside Diameter: 1.190 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
Aperture Diameter: 0.781 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
Material: CORK AND RUBBER SYNTHETIC OVERALL

Identification

NSN: 5330-00-239-0658
NIIN: 002390658
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives
Primary part number: B1440
Manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

General Description

The Gasket, cataloged under National Stock Number 5330-00-239-0658, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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.

Technical Specifications

Parameter	Value
NSN	5330-00-239-0658
Primary Part Number	B1440
Item Name	Gasket
FSC / FSG	5330 / 53 — Packing and Gasket Materials
Manufacturer	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Status	ACTIVE
Cross-Sectional Thickness	0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
Style Designator	CIRCULAR
Material Document and Classification	AMS 3250 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style	SOLID SINGLE OR COMPOSITION
Outside Diameter	1.190 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
Aperture Diameter	0.781 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
Material	CORK AND RUBBER SYNTHETIC OVERALL

Lifecycle & Compliance

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

⇄ Related Items 3

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

5360-00-363-69791440 POSSIBLE MATCH

SPRING,HELICAL,E,PA

Possible match (shared part number)Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor

5340-01-349-3543B1440 POSSIBLE MATCH

CAP,PROTECTIVE,DUST AND MOISTURE

Possible match (shared part number)Te Connectivity Corporation

5963-01-579-7209B1440 POSSIBLE MATCH

STBD CONTROL PANEL

Possible match (shared part number)Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan

Cross-Reference Index

Part Number	Manufacturer
B1440	Marine & Industrial Transmissions Ltd (GBR)
B1440 PRIMARY	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)

Reference documents

Reference	Meaning
B1440	5/9 Secondary reference Twin Disc International S a

Related Parts

5360-00-363-6979POSSIBLE MATCH

SPRING,HELICAL,E,PA

1440

5340-01-349-3543POSSIBLE MATCH

CAP,PROTECTIVE,DUST AND MOISTURE

B1440

5963-01-579-7209POSSIBLE MATCH

STBD CONTROL PANEL

B1440

Frequently Asked Questions

What is NSN 5330-00-239-0658?

NSN 5330-00-239-0658 is a Gasket, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330, Packing and Gasket Materials. Status: active.

What part numbers are listed for NSN 5330-00-239-0658?

NSN 5330-00-239-0658 has 2 manufacturer part numbers on file: B1440 (Marine & Industrial Transmissions Ltd), B1440 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 5330-00-239-0658?

3 possible matches (shared part number, not a government interchangeability claim): 5360-00-363-6979, 5340-01-349-3543, 5963-01-579-7209. Verify interchangeability with system specifications before substitution.

What are the specifications of B1440?

Key specifications for B1440: Cross-Sectional Thickness: 0.065 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN; Style Designator: CIRCULAR; Material Document and Classification: AMS 3250 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5330-00-239-0658 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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