PartsTable TECHNICAL DATA SHEET

NSN 5970-00-004-8971Government record, cited

Insulator, Washer5970-00-004-8971

NSN 5970-00-004-8971 · NIIN 000048971

FSC 5970 — Electrical Insulators and Insulating Materials · FSG 59 — Electrical and Electronic Equipment Components

Government record, cited

Also searched as 5970-00-004-8971 · 5970000048971 · NIIN 000048971 · 00-004-8971 · FSC 5970 Electrical Insulators and Insulating Materials · NAS549 · NAS549GL516

Nearby stock numbers ← 5970-00-004-8968 · 5970-00-004-8972 Insulator, Standoff →

Features

Insulator,washer — FSC 5970
Style Designator: ROUND, FLAT
Material Document and Classification: MIL-P-18177, TYPE GEB MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-I-24768/3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
Specification/standard Data: 80205-NAS549 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Inside Diameter: 0.328 INCHES NOMINAL IN
Material: PLASTIC EPOXY AND GLASS FIBER OVERALL

Identification

NSN: 5970-00-004-8971
NIIN: 000048971
FSC: 5970 — Electrical Insulators and Insulating Materials
FSG: 59 — Electrical and Electronic Equipment Components

General Description

The Insulator,washer, cataloged under National Stock Number 5970-00-004-8971, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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	5970-00-004-8971
Item Name	Insulator,washer
FSC / FSG	5970 / 59 — Electrical Insulators and Insulating Materials
Status	ACTIVE
Style Designator	ROUND, FLAT
Material Document and Classification	MIL-P-18177, TYPE GEB MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-I-24768/3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN
Specification/standard Data	80205-NAS549 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Inside Diameter	0.328 INCHES NOMINAL IN
Material	PLASTIC EPOXY AND GLASS FIBER OVERALL

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

⇄ Related Items 6

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

5970-00-177-1405NAS549FL6 POSSIBLE MATCH

INSULATOR,WASHER

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5970-00-585-8118NAS549-L716 POSSIBLE MATCH

INSULATOR,WASHER

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5970-00-618-77689026279 POSSIBLE MATCH

INSULATOR,WASHER

Possible match (shared part number)Us Army Aviation and Missile Command

5310-00-820-12509096362 POSSIBLE MATCH

WASHER,FLAT

Possible match (shared part number)Raytheon Company

5970-00-991-2949NAS549P8 POSSIBLE MATCH

INSULATOR,WASHER

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

5970-01-182-4717NAS549 POSSIBLE MATCH

INSULATOR,WASHER

Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

Cross-Reference Index

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

Reference documents

Reference	Meaning
NAS549	5/1 Secondary reference U.S. Government activity
NAS549GL516	3/2 Design control — primary reference U.S. Government activity

Related Parts

5970-00-177-1405POSSIBLE MATCH

INSULATOR,WASHER

NAS549FL6

5970-00-585-8118POSSIBLE MATCH

INSULATOR,WASHER

NAS549-L716

5970-00-618-7768POSSIBLE MATCH

INSULATOR,WASHER

9026279

5310-00-820-1250POSSIBLE MATCH

WASHER,FLAT

9096362

5970-00-991-2949POSSIBLE MATCH

INSULATOR,WASHER

NAS549P8

5970-01-182-4717POSSIBLE MATCH

INSULATOR,WASHER

NAS549

Frequently Asked Questions

What is NSN 5970-00-004-8971?

NSN 5970-00-004-8971 is a Insulator,washer, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.

What NSN replaces 5970-00-004-8971?

6 possible matches (shared part number, not a government interchangeability claim): 5970-00-177-1405, 5970-00-585-8118, 5970-00-618-7768. Verify interchangeability with system specifications before substitution.

What are the specifications of 5970-00-004-8971?

Key specifications for 5970-00-004-8971: Overall Height: 0.031 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Material Document and Classification: MIL-P-18177, TYPE GEB MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-I-24768/3 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.557 INCHES MINIMUM AND 0.582 INCHES MAXIMUM IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5970-00-004-8971 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). 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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