Nut, Plain, Hexagon5310-01-529-8420

NSN 5310-01-529-8420 · NIIN 015298420 · Part number 31CNFHS

Mell Pell Supply Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 3K274

Government record, cited

NSN 5310-01-529-8420 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-529-8420. Manufacturer of record part number: 31CNFHS.

Also searched as 5310-01-529-8420 · 5310015298420 · NIIN 015298420 · 01-529-8420 · FSC 5310 Nuts and Washers · CAGE 3K274 · 31CNFHS

Nearby stock numbers ← 5310-01-529-8416 Washer, Lock · 5310-01-529-8421 Washer, Flat →

5310-01-529-8420 — Nuts and Washers

Features

Nut,plain,hexagon — FSC 5310
Thread Series: UNIFIED NATIONAL COARSE (UNC)
Thread Direction: RIGHT-HAND
Nominal Thread Size: 0.312 INCHES IN
Nut Style: HEXAGON
Thread Quantity Per Inch: 18
Material: STEEL CORROSION RESISTING OVERALL
1 manufacturer part number on file

Identification

NSN: 5310-01-529-8420
NIIN: 015298420
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 31CNFHS
Manufacturer: Mell Pell Supply Inc

General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-529-8420, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mell Pell Supply Inc. Government technical data includes 6 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	5310-01-529-8420
Primary Part Number	31CNFHS
Item Name	Nut,plain,hexagon
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Mell Pell Supply Inc
Status	ACTIVE
Thread Series	UNIFIED NATIONAL COARSE (UNC)
Thread Direction	RIGHT-HAND
Nominal Thread Size	0.312 INCHES IN
Nut Style	HEXAGON
Thread Quantity Per Inch	18
Material	STEEL CORROSION RESISTING 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

Cross-Reference Index

Part Number	Manufacturer
31CNFHS PRIMARY	Mell Pell Supply Inc (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 5310-01-529-8420?

NSN 5310-01-529-8420 is a Nut,plain,hexagon, manufactured by Mell Pell Supply Inc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-529-8420?

NSN 5310-01-529-8420 has 1 manufacturer part number on file: 31CNFHS (Mell Pell Supply Inc).

What are the specifications of 31CNFHS?

Key specifications for 31CNFHS: Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN; Nut Style: HEXAGON. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-529-8420 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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