PartsTable TECHNICAL DATA SHEET

NSN 5310-01-668-3729Government record, cited

Washer, Flat5310-01-668-3729

NSN 5310-01-668-3729 · NIIN 016683729 · Part number A-445-111PC102

Hansome Energy Systems Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 51802

Government record, cited

NSN 5310-01-668-3729 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-668-3729. Manufacturer of record part number: A-445-111PC102.

Also searched as 5310-01-668-3729 · 5310016683729 · NIIN 016683729 · 01-668-3729 · FSC 5310 Nuts and Washers · CAGE 51802 · A-445-111PC102 · A-445-111

Nearby stock numbers ← 5310-01-668-3708 Nut, Self-Locking, Hexagon · 5310-01-668-3763 Washer, Split →

5310-01-668-3729 — Nuts and Washers

Features

Washer,flat — FSC 5310
Surface Treatment: ZINC OVERALL
Material: STEEL OVERALL
1 manufacturer part number on file
Manufacturer of record: Hansome Energy Systems Inc

Identification

NSN: 5310-01-668-3729
NIIN: 016683729
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: A-445-111PC102
Manufacturer: Hansome Energy Systems Inc

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-668-3729, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hansome Energy Systems Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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	5310-01-668-3729
Primary Part Number	A-445-111PC102
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Hansome Energy Systems Inc
Status	ACTIVE
Surface Treatment	ZINC OVERALL
Material	STEEL OVERALL

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 9

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

5305-01-668-9284A-445-111PC78 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Hansome Energy Systems Inc

5305-01-669-0858A-445-111PC79 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Hansome Energy Systems Inc

5315-01-669-0873HAN3997-2 POSSIBLE MATCH

KEY,MACHINE

Possible match (shared part number)Hansome Energy Systems Inc

5305-01-669-0876A-445-111PC83 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Hansome Energy Systems Inc

5305-01-669-0878A-445-111PC81 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Hansome Energy Systems Inc

5310-01-669-0890A-445-111PC95 POSSIBLE MATCH

WASHER,LOCK

Possible match (shared part number)Hansome Energy Systems Inc

5310-01-669-0895A-445-111PC99 POSSIBLE MATCH

WASHER,LOCK

Possible match (shared part number)Hansome Energy Systems Inc

5310-01-669-0898A-445-111PC126 POSSIBLE MATCH

WASHER,LOCK

Possible match (shared part number)Hansome Energy Systems Inc

5305-01-669-0907A-445-111PC82 POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

Possible match (shared part number)Hansome Energy Systems Inc

Cross-Reference Index

Part Number	Manufacturer
A-445-111PC102 PRIMARY	Hansome Energy Systems Inc (USA)

Reference documents

Reference	Meaning
A-445-111	D/9 Drawing number reference only Hansome Energy Systems Inc

Related Parts

5305-01-668-9284POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

A-445-111PC78

5305-01-669-0858POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

A-445-111PC79

5315-01-669-0873POSSIBLE MATCH

KEY,MACHINE

HAN3997-2

5305-01-669-0876POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

A-445-111PC83

5305-01-669-0878POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

A-445-111PC81

5310-01-669-0890POSSIBLE MATCH

WASHER,LOCK

A-445-111PC95

5310-01-669-0895POSSIBLE MATCH

WASHER,LOCK

A-445-111PC99

5310-01-669-0898POSSIBLE MATCH

WASHER,LOCK

A-445-111PC126

5305-01-669-0907POSSIBLE MATCH

SCREW,CAP,SOCKET HEAD

A-445-111PC82

Frequently Asked Questions

What is NSN 5310-01-668-3729?

NSN 5310-01-668-3729 is a Washer,flat, manufactured by Hansome Energy Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-668-3729?

NSN 5310-01-668-3729 has 1 manufacturer part number on file: A-445-111PC102 (Hansome Energy Systems Inc).

What NSN replaces 5310-01-668-3729?

9 possible matches (shared part number, not a government interchangeability claim): 5305-01-668-9284, 5305-01-669-0858, 5315-01-669-0873. Verify interchangeability with system specifications before substitution.

What are the specifications of A-445-111PC102?

Key specifications for A-445-111PC102: Special Features: ITEM 1/4 STD; Surface Treatment: ZINC OVERALL; Part Name Assigned by Controlling Agency: WASHER, FLAT; Material: STEEL OVERALL. 2 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-668-3729 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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