PartsTable TECHNICAL DATA SHEET

NSN 5310-00-774-0503Government record, cited

Washer, Flat5310-00-774-0503

NSN 5310-00-774-0503 · NIIN 007740503 · Part number 7740503

U S Army Tank Automotive Command Amsta-Im-Mm · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 19207

Government record, cited

NSN 5310-00-774-0503 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-774-0503. Manufacturer of record part number: 7740503.

Also searched as 5310-00-774-0503 · 5310007740503 · NIIN 007740503 · 00-774-0503 · FSC 5310 Nuts and Washers · CAGE 19207 · 7740503 · 20559

Nearby stock numbers ← 5310-00-774-0475 · 5310-00-774-0516 Washer, Key →

5310-00-774-0503 — Nuts and Washers

Features

Washer,flat — FSC 5310
Overall Diameter: 0.375 INCHES NOMINAL IN
Cross-Sectional Shape Style: RECTANGULAR
Peripheral Shape Style: ROUND
Material: ALUMINUM ALLOY OVERALL
Center Hole Shape Style: ROUND
Hole Diameter: 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
Thickness: 0.016 INCHES NOMINAL IN

Identification

NSN: 5310-00-774-0503
NIIN: 007740503
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 7740503
Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm

General Description

The Washer,flat, cataloged under National Stock Number 5310-00-774-0503, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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	5310-00-774-0503
Primary Part Number	7740503
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	U S Army Tank Automotive Command Amsta-Im-Mm
Status	ACTIVE
Overall Diameter	0.375 INCHES NOMINAL IN
Cross-Sectional Shape Style	RECTANGULAR
Peripheral Shape Style	ROUND
Material	ALUMINUM ALLOY OVERALL
Center Hole Shape Style	ROUND
Hole Diameter	0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
Thickness	0.016 INCHES NOMINAL IN

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

⇄ Related Items 5

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

4810-01-229-551720559 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Real-Time Laboratories, Llc

5962-01-270-2867717801039-001 POSSIBLE MATCH

MICROCIRCUIT,DIGITAL

Possible match (shared part number)Lockheed Martin Corporation

4720-01-273-051620559 POSSIBLE MATCH

HOSE,NONMETALLIC

Possible match (shared part number)Gates Corporation

4810-01-378-889820559 POSSIBLE MATCH

SLEEVE,DIRECTIONAL CONTROL LINEA

Possible match (shared part number)Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val

5120-01-430-8129 POSSIBLE MATCH

CROWFOOT ATTACHMENT,SOCKET WRENC

Possible match (shared part number)

Cross-Reference Index

Part Number	Manufacturer
7740503 PRIMARY	U S Army Tank Automotive Command Amsta-Im-Mm (USA)

Reference documents

Reference	Meaning
20559	5/9 Secondary reference Solventum Purification Inc. Div Filtration and Separation Division

Related Parts

4810-01-229-5517POSSIBLE MATCH

STEM,FLUID VALVE

20559

5962-01-270-2867POSSIBLE MATCH

MICROCIRCUIT,DIGITAL

717801039-001

4720-01-273-0516POSSIBLE MATCH

HOSE,NONMETALLIC

20559

4810-01-378-8898POSSIBLE MATCH

SLEEVE,DIRECTIONAL CONTROL LINEA

20559

5120-01-430-8129POSSIBLE MATCH

CROWFOOT ATTACHMENT,SOCKET WRENC

Frequently Asked Questions

What is NSN 5310-00-774-0503?

NSN 5310-00-774-0503 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-00-774-0503?

NSN 5310-00-774-0503 has 1 manufacturer part number on file: 7740503 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 5310-00-774-0503?

5 possible matches (shared part number, not a government interchangeability claim): 4810-01-229-5517, 5962-01-270-2867, 4720-01-273-0516. Verify interchangeability with system specifications before substitution.

What are the specifications of 7740503?

Key specifications for 7740503: Overall Diameter: 0.375 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: ALUMINUM ALLOY OVERALL. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-774-0503 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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