The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-126-4012, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
5310-00-126-4012
Item Name
Nut,plain,hexagon
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Width Across Flats
0.625 INCHES NOMINAL IN
Thread Series
UNF
Thread Direction
RIGHT-HAND
Nominal Thread Size
0.438 INCHES IN
Thread Class
3B
Thread Quantity Per Inch
20
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
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3110-00-419-461950252POSSIBLE MATCH
BEARING,BALL,THRUST
Possible match (shared part number)Aerol Llc
5930-00-980-761750-252POSSIBLE MATCH
SWITCH
Possible match (shared part number)Motorola Solutions Danmark A/s
4730-01-432-388350252POSSIBLE MATCH
EXPANSION JOINT,PIPE
Possible match (shared part number)Hyspan Precision Products, Inc.
5930-01-565-492450252POSSIBLE MATCH
SWITCH,ELECTRONIC
Possible match (shared part number)Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
50252
3/9Design control — primary reference
The Hamilton Caster & Mfg. Company
Related Parts
3110-00-419-4619POSSIBLE MATCH
BEARING,BALL,THRUST
50252
5930-00-980-7617POSSIBLE MATCH
SWITCH
50-252
4730-01-432-3883POSSIBLE MATCH
EXPANSION JOINT,PIPE
50252
5930-01-565-4924POSSIBLE MATCH
SWITCH,ELECTRONIC
50252
Frequently Asked Questions
What is NSN 5310-00-126-4012?
NSN 5310-00-126-4012 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-00-126-4012?
4 possible matches (shared part number, not a government interchangeability claim): 3110-00-419-4619, 5930-00-980-7617, 4730-01-432-3883. Verify interchangeability with system specifications before substitution.
What are the specifications of 5310-00-126-4012?
Key specifications for 5310-00-126-4012: Width Across Flats: 0.625 INCHES NOMINAL IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.438 INCHES IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-126-4012 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.