Washer5310-01-279-2558

NSN 5310-01-279-2558 · NIIN 012792558 · Part number 5030A203

Myers F E Co Sub of Pentair Corp · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 42223

Government record, cited

NSN 5310-01-279-2558 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-279-2558. Manufacturer of record part number: 5030A203.

Also searched as 5310-01-279-2558 · 5310012792558 · NIIN 012792558 · 01-279-2558 · FSC 5310 Nuts and Washers · CAGE 42223 · 5030A203 · A3-PS-000121 · A3-PS-000121/15

Nearby stock numbers ← 5310-01-279-2540 Swivel Nut · 5310-01-279-2613 Nut, Plain, Hexagon →

5310-01-279-2558 — Nuts and Washers

Features

Washer — FSC 5310
4 manufacturer part numbers on file
Manufacturer of record: Myers F E Co Sub of Pentair Corp

Identification

NSN: 5310-01-279-2558
NIIN: 012792558
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 5030A203
Manufacturer: Myers F E Co Sub of Pentair Corp

General Description

The Washer, cataloged under National Stock Number 5310-01-279-2558, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Myers F E Co Sub of Pentair Corp. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Washer
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Calder Ltd (CAGE U4484); Myers F E Co Sub of Pentair Corp (CAGE 42223)

Technical Specifications

Parameter	Value
NSN	5310-01-279-2558
Primary Part Number	5030A203
Item Name	Washer
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Myers F E Co Sub of Pentair 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)

⇄ Related Items 1

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

5330-01-279-26315876A91 POSSIBLE MATCH

PACKING,PREFORMED

Possible match (shared part number)Myers F E Co Sub of Pentair Corp

Cross-Reference Index

Part Number	Manufacturer
5030A203	Calder Ltd (GBR)
5030A203 PRIMARY	Myers F E Co Sub of Pentair Corp (USA)
A3-PS-000121	Calder Ltd (GBR)
A3-PS-000121/15	Calder Ltd (GBR)

Related Parts

5330-01-279-2631POSSIBLE MATCH

PACKING,PREFORMED

5876A91

Frequently Asked Questions

What is NSN 5310-01-279-2558?

NSN 5310-01-279-2558 is a Washer, manufactured by Myers F E Co Sub of Pentair Corp, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-279-2558?

NSN 5310-01-279-2558 has 4 manufacturer part numbers on file: 5030A203 (Calder Ltd), 5030A203 (Myers F E Co Sub of Pentair Corp), A3-PS-000121 (Calder Ltd), A3-PS-000121/15 (Calder Ltd).

What NSN replaces 5310-01-279-2558?

1 possible match (shared part number, not a government interchangeability claim): 5330-01-279-2631. Verify interchangeability with system specifications before substitution.

Is NSN 5310-01-279-2558 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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