PartsTable TECHNICAL DATA SHEET

NSN 5310-01-033-1441Government record, cited

Washer, Convex5310-01-033-1441

NSN 5310-01-033-1441 · NIIN 010331441 · Part number CSTW4

Allmetal Screw Products Corp · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 70318

Government record, cited

NSN 5310-01-033-1441 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-033-1441. Manufacturer of record part number: CSTW4.

Also searched as 5310-01-033-1441 · 5310010331441 · NIIN 010331441 · 01-033-1441 · FSC 5310 Nuts and Washers · CAGE 70318 · CSTW4 · 21009838-101

Nearby stock numbers ← 5310-01-033-1370 · 5310-01-033-1442 Washer, Recessed →

5310-01-033-1441 — Nuts and Washers

Features

Washer,convex — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Allmetal Screw Products Corp

Identification

NSN: 5310-01-033-1441
NIIN: 010331441
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: CSTW4
Manufacturer: Allmetal Screw Products Corp

General Description

The Washer,convex, cataloged under National Stock Number 5310-01-033-1441, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Allmetal Screw Products Corp. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Washer,convex
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Allmetal Screw Products Corp (CAGE 70318)

Technical Specifications

Parameter	Value
NSN	5310-01-033-1441
Primary Part Number	CSTW4
Item Name	Washer,convex
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Allmetal Screw Products Corp
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
CSTW4 PRIMARY	Allmetal Screw Products Corp (USA)

Reference documents

Reference	Meaning
21009838-101	7/2 Vendor item drawing reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040

5310-00-000-0040 · Item name not on file

5310-00-000-0077

NUT,PLAIN,ROUND

5310-00-000-0079

WASHER,FLAT

5310-00-000-0079

WASHER,FLAT

5310-00-000-1146

5310-00-000-1146 · Item name not on file

5310-00-000-3815

5310-00-000-3815 · Item name not on file

5310-00-000-4532

5310-00-000-4532 · Item name not on file

5310-00-000-4540

5310-00-000-4540 · Item name not on file

Frequently Asked Questions

What is NSN 5310-01-033-1441?

NSN 5310-01-033-1441 is a Washer,convex, manufactured by Allmetal Screw Products Corp, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-033-1441?

NSN 5310-01-033-1441 has 1 manufacturer part number on file: CSTW4 (Allmetal Screw Products Corp).

Is NSN 5310-01-033-1441 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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