NSN 5310-01-646-0059 · NIIN 016460059 · Part number 588-7666730
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5310-01-646-0059 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-646-0059. Manufacturer of record part number: 588-7666730.
Width Across Flats: 4.475 INCHES MINIMUM AND 4.625 INCHES MAXIMUM IN
Thread Series: UN
Thread Direction: RIGHT-HAND
Nominal Thread Size: 3.000 INCHES IN
Nut Height: 2.893 INCHES MINIMUM AND 3.013 INCHES MAXIMUM IN
Surface Treatment: ZINC OVERALL
Nut Style: HEXAGON
Identification
NSN: 5310-01-646-0059
NIIN: 016460059
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 588-7666730
Manufacturer: Naval Sea Systems Command
General Description
The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-646-0059, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government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
5310-01-646-0059
Primary Part Number
588-7666730
Item Name
Nut,plain,hexagon
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Width Across Flats
4.475 INCHES MINIMUM AND 4.625 INCHES MAXIMUM IN
Thread Series
UN
Thread Direction
RIGHT-HAND
Nominal Thread Size
3.000 INCHES IN
Nut Height
2.893 INCHES MINIMUM AND 3.013 INCHES MAXIMUM IN
Surface Treatment
ZINC OVERALL
Nut Style
HEXAGON
Thread Class
2B
Thread Quantity Per Inch
8
Material
STEEL OVERALL
Bearing Surface Type
FLAT
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 Items12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3130-01-646-242315892552POSSIBLE MATCH
BEARING UNIT,ROLLER
Possible match (shared part number)Naval Sea Systems Command
5310-01-646-2782588-7666730 ITEM 32POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
5310-01-646-2825588-7666730 ITEM 33POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
5360-01-646-284316523549POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
Possible match (shared part number)Naval Sea Systems Command
5315-01-646-2934588-7666730 ITEM 21POSSIBLE MATCH
PIN,SHOULDER,HEADED
Possible match (shared part number)Naval Sea Systems Command
5315-01-646-3065NASM24665-660POSSIBLE MATCH
PIN,COTTER
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-646-3066NASM17829, Z16CPOSSIBLE MATCH
NUT,SELF-LOCKING,HEXAGON
Possible match (shared part number)National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-646-6530588-7666730 ITEM 13POSSIBLE MATCH
NUT,SELF-LOCKING,HEXAGON
Possible match (shared part number)Naval Sea Systems Command
5310-01-646-9307588-7666730 ITEM 10POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
3990-01-648-1274588-7666730 ASSY 94POSSIBLE MATCH
ROLLER,MATERIAL HANDLING
Possible match (shared part number)Naval Sea Systems Command
NSN 5310-01-646-0059 is a Nut,plain,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-646-0059?
NSN 5310-01-646-0059 has 2 manufacturer part numbers on file: 588-7666730 ITEM 5 (Naval Sea Systems Command), 588-7666730 (Naval Sea Systems Command).
What NSN replaces 5310-01-646-0059?
12 possible matches (shared part number, not a government interchangeability claim): 3130-01-646-2423, 5310-01-646-2782, 5310-01-646-2825. Verify interchangeability with system specifications before substitution.
What are the specifications of 588-7666730?
Key specifications for 588-7666730: Width Across Flats: 4.475 INCHES MINIMUM AND 4.625 INCHES MAXIMUM IN; Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 3.000 INCHES IN. 11 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-646-0059 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.