Washer, Flat5310-01-668-4306

NSN 5310-01-668-4306 · NIIN 016684306 · Part number QCS501

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 55719

Government record, cited

NSN 5310-01-668-4306 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-668-4306. Manufacturer of record part number: QCS501.

Also searched as 5310-01-668-4306 · 5310016684306 · NIIN 016684306 · 01-668-4306 · FSC 5310 Nuts and Washers · CAGE 55719 · QCS501

Nearby stock numbers ← 5310-01-668-4303 Washer, Flat · 5310-01-668-4378 Nut, Plain, Hexagon →

5310-01-668-4306 — Nuts and Washers

Features

Washer,flat — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc

Identification

NSN: 5310-01-668-4306
NIIN: 016684306
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: QCS501
Manufacturer: Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-668-4306, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-668-4306
Primary Part Number	QCS501
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Status	ACTIVE

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

Part Number	Manufacturer
QCS501 PRIMARY	Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)

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 5310-01-668-4306?

NSN 5310-01-668-4306 is a Washer,flat, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-668-4306?

NSN 5310-01-668-4306 has 1 manufacturer part number on file: QCS501 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).

What are the specifications of QCS501?

Key specifications for QCS501: Special Features: USED ON TORQUE WRECCH ADJUSTABLE; End Item Identification: REPAIR KIT RKRFC936. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-668-4306 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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