PartsTable TECHNICAL DATA SHEET

NSN 5310-01-587-7916Government record, cited

Nut, Self-Locking, Hexagon5310-01-587-7916

NSN 5310-01-587-7916 · NIIN 015877916 · Part number NN-21-BK

Sealcon Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 0UE11

Government record, cited

NSN 5310-01-587-7916 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-587-7916. Manufacturer of record part number: NN-21-BK.

Also searched as 5310-01-587-7916 · 5310015877916 · NIIN 015877916 · 01-587-7916 · FSC 5310 Nuts and Washers · CAGE 0UE11 · NN-21-BK

Nearby stock numbers ← 5310-01-587-7893 Nut, Plain, Hexagon · 5310-01-587-7917 Washer, Flat →

5310-01-587-7916 — Nuts and Washers

Features

Nut,self-Locking,hexagon — FSC 5310
2 manufacturer part numbers on file
Manufacturer of record: Sealcon Llc

Identification

NSN: 5310-01-587-7916
NIIN: 015877916
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: NN-21-BK
Manufacturer: Sealcon Llc

General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-587-7916, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sealcon Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-587-7916
Primary Part Number	NN-21-BK
Item Name	Nut,self-Locking,hexagon
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Sealcon 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
NN-21-BK PRIMARY	Sealcon Llc (USA)
NN-21-BK	Amz Alabama Inc. (USA)

Reference documents

Reference	Meaning
NN-21-BK	5/2 Secondary reference U.S. Government activity

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 5310-01-587-7916?

NSN 5310-01-587-7916 is a Nut,self-Locking,hexagon, manufactured by Sealcon Llc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-587-7916?

NSN 5310-01-587-7916 has 2 manufacturer part numbers on file: NN-21-BK (Sealcon Llc), NN-21-BK (Amz Alabama Inc.).

What are the specifications of NN-21-BK?

Key specifications for NN-21-BK: End Item Identification: MRAP-RG33. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-587-7916 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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