PartsTable TECHNICAL DATA SHEET

NSN 5310-01-048-5331Government record, cited

Nut, Plain, Hexagon5310-01-048-5331

NSN 5310-01-048-5331 · NIIN 010485331 · Part number 991-4-00217-001

Naval Inventory Control Point Mechanicsburg · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 03950

Government record, cited

NSN 5310-01-048-5331 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-048-5331. Manufacturer of record part number: 991-4-00217-001.

Also searched as 5310-01-048-5331 · 5310010485331 · NIIN 010485331 · 01-048-5331 · FSC 5310 Nuts and Washers · CAGE 03950 · 991-4-00217-001

Nearby stock numbers ← 5310-01-048-5330 Nut, Self-Locking, Clinch · 5310-01-048-5332 Nut, Special →

5310-01-048-5331 — Nuts and Washers

Features

Nut,plain,hexagon — FSC 5310
Width Across Flats: 0.188 INCHES NOMINAL IN
Thread Series: UNF
Thread Direction: RIGHT-HAND
Nominal Thread Size: 0.125 INCHES IN
Nut Height: 0.094 INCHES NOMINAL IN
Nut Style: HEXAGON
Thread Class: 2B

Identification

NSN: 5310-01-048-5331
NIIN: 010485331
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 991-4-00217-001
Manufacturer: Naval Inventory Control Point Mechanicsburg

General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-048-5331, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 10 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-048-5331
Primary Part Number	991-4-00217-001
Item Name	Nut,plain,hexagon
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Naval Inventory Control Point Mechanicsburg
Status	ACTIVE
Width Across Flats	0.188 INCHES NOMINAL IN
Thread Series	UNF
Thread Direction	RIGHT-HAND
Nominal Thread Size	0.125 INCHES IN
Nut Height	0.094 INCHES NOMINAL IN
Nut Style	HEXAGON
Thread Class	2B
Thread Quantity Per Inch	44
Material	STEEL CORROSION RESISTING OVERALL
Bearing Surface Type	CHAMFERED

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
991-4-00217-001 PRIMARY	Naval Inventory Control Point Mechanicsburg (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 5310-01-048-5331?

NSN 5310-01-048-5331 is a Nut,plain,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-048-5331?

NSN 5310-01-048-5331 has 1 manufacturer part number on file: 991-4-00217-001 (Naval Inventory Control Point Mechanicsburg).

What are the specifications of 991-4-00217-001?

Key specifications for 991-4-00217-001: Width Across Flats: 0.188 INCHES NOMINAL IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.125 INCHES IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-048-5331 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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