Width Across Flats: 0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
Thread Series: UNIFIED NATIONAL COARSE (UNC)
Hardness Rating: 69.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Thread Direction: RIGHT-HAND
Nominal Thread Size: 0.375 INCHES IN
Nut Height: 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
Nut Style: HEXAGON
Identification
NSN: 5310-00-655-9544
NIIN: 006559544
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-655-9544, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
5310-00-655-9544
Item Name
Nut,plain,hexagon
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Width Across Flats
0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
Thread Series
UNIFIED NATIONAL COARSE (UNC)
Hardness Rating
69.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Thread Direction
RIGHT-HAND
Nominal Thread Size
0.375 INCHES IN
Nut Height
0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
Nut Style
HEXAGON
Thread Class
2B
Thread Quantity Per Inch
16
Material
STEEL OVERALL
Bearing Surface Type
CHAMFERED OR WASHER FACED
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 Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4710-00-718-241728902POSSIBLE MATCH
TUBE ASSEMBLY,COMPR
Possible match (shared part number)Hdt Expeditionary Systems Inc
7050-00-978-7875POSSIBLE MATCH
ACTUATOR ASSEMBLY
Possible match (shared part number)
3040-01-062-352928902POSSIBLE MATCH
LEVER,LOCKING,SINGLE
Possible match (shared part number)Jergens Inc Div Tooling Components Division
5310-01-521-8923AEN04F375000AZ6A91POSSIBLE MATCH
NUT,SELF-LOCKING,HEXAGON
Possible match (shared part number)The American Society of Mechanical Engineers
5310-01-529-3148N220N03FAANN56302BCH1POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)The American Society of Mechanical Engineers
5310-01-630-5967POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)
5310-01-658-3998POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)
5310-01-658-4002POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)
5310-01-658-4009POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)
5999-01-721-319128902POSSIBLE MATCH
ACCESSORY KIT,ELECTRONIC EQUIPME
Possible match (shared part number)Campbell Scientific Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
B18.6.3
5/9Secondary reference
U.S. Government activity
ASME B18.2.2
3/1Design control — primary reference
The American Society of Mechanical Engineers
5310006559544
5/9Secondary reference
E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
M909A
5/1Secondary reference
Gardner Denver Inc.
FF-N-836
5/9Secondary reference
U.S. Government activity
MS35690-604
5/9Secondary reference
U.S. Government activity
28902
5/1Secondary reference
Kaydon Custom Filtration Corporation
Related Parts
4710-00-718-2417POSSIBLE MATCH
TUBE ASSEMBLY,COMPR
28902
7050-00-978-7875POSSIBLE MATCH
ACTUATOR ASSEMBLY
3040-01-062-3529POSSIBLE MATCH
LEVER,LOCKING,SINGLE
28902
5310-01-521-8923POSSIBLE MATCH
NUT,SELF-LOCKING,HEXAGON
AEN04F375000AZ6A91
5310-01-529-3148POSSIBLE MATCH
NUT,PLAIN,HEXAGON
N220N03FAANN56302BCH1
5310-01-630-5967POSSIBLE MATCH
NUT,PLAIN,HEXAGON
5310-01-658-3998POSSIBLE MATCH
NUT,PLAIN,HEXAGON
5310-01-658-4002POSSIBLE MATCH
NUT,PLAIN,HEXAGON
5310-01-658-4009POSSIBLE MATCH
NUT,PLAIN,HEXAGON
5999-01-721-3191POSSIBLE MATCH
ACCESSORY KIT,ELECTRONIC EQUIPME
28902
Frequently Asked Questions
What is NSN 5310-00-655-9544?
NSN 5310-00-655-9544 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-00-655-9544?
10 possible matches (shared part number, not a government interchangeability claim): 4710-00-718-2417, 7050-00-978-7875, 3040-01-062-3529. Verify interchangeability with system specifications before substitution.
What are the specifications of 5310-00-655-9544?
Key specifications for 5310-00-655-9544: Width Across Flats: 0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 69.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM; Thread Direction: RIGHT-HAND. 11 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-655-9544 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.