Washer, Spring Tension5310-01-078-6443

NSN 5310-01-078-6443 · NIIN 010786443

FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5310-01-078-6443 · 5310010786443 · NIIN 010786443 · 01-078-6443 · FSC 5310 Nuts and Washers · A-7661-55B · A7661-55B

Nearby stock numbers ← 5310-01-078-6442 Washer, Flat · 5310-01-078-6857 Nut, Special →

5310-01-078-6443 — Nuts and Washers

Features

Washer,spring Tension — FSC 5310
Outside Diameter: 4.516 INCHES MINIMUM AND 4.516 INCHES MINIMUM AND 4.615 INCHES MAXIMUM4.615 INCHES MAXIMUM IN
Material Thickness: 0.047 INCHES NOMINAL0.047 INCHES NOMINAL IN
Surface Treatment: OIL OVERALL
Material: STEEL OVERALL
Hole Diameter: 3.501 INCHES MINIMUM AND 3.501 INCHES MINIMUM AND 3.600 INCHES MAXIMUM3.600 INCHES MAXIMUM IN

Identification

NSN: 5310-01-078-6443
NIIN: 010786443
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,spring Tension, cataloged under National Stock Number 5310-01-078-6443, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5310-01-078-6443
Item Name	Washer,spring Tension
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Outside Diameter	4.516 INCHES MINIMUM AND 4.516 INCHES MINIMUM AND 4.615 INCHES MAXIMUM4.615 INCHES MAXIMUM IN
Material Thickness	0.047 INCHES NOMINAL0.047 INCHES NOMINAL IN
Surface Treatment	OIL OVERALL
Material	STEEL OVERALL
Hole Diameter	3.501 INCHES MINIMUM AND 3.501 INCHES MINIMUM AND 3.600 INCHES MAXIMUM3.600 INCHES MAXIMUM 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

Cross-Reference Index

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

Reference documents

Reference	Meaning
A-7661-55B	C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh
A7661-55B	3/9 Design control — primary reference Marathon Electric, Llc

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 5310-01-078-6443?

NSN 5310-01-078-6443 is a Washer,spring Tension, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-078-6443?

Key specifications for 5310-01-078-6443: Overall Height: 0.334 INCHES NOMINAL0.334 INCHES NOMINAL IN; Outside Diameter: 4.516 INCHES MINIMUM AND 4.516 INCHES MINIMUM AND 4.615 INCHES MAXIMUM4.615 INCHES MAXIMUM IN; Material Thickness: 0.047 INCHES NOMINAL0.047 INCHES NOMINAL IN; Surface Treatment: OIL OVERALL. 5 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-078-6443 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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