FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives
Government record, cited
Also searched as5310-00-138-6645 ·
5310001386645 ·
NIIN 001386645 ·
00-138-6645 ·
FSC 5310 Nuts and Washers
Nearby stock numbers← 5310-00-138-6644 Nut Assembly, Self-Locking, Gang C
·
5310-00-138-6646 →
5310-00-138-6645 — Nuts and Washers
Features
Nut,plain,round — FSC 5310
Thread Series: UNEF
Thread Direction: LEFT-HAND
Nominal Thread Size: 0.750 INCHES IN
Nut Diameter: 2.188 INCHES NOMINAL IN
Nut Thickness: 1.312 INCHES NOMINAL IN
Thread Quantity Per Inch: 6
Identification
NSN: 5310-00-138-6645
NIIN: 001386645
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Nut,plain,round, cataloged under National Stock Number 5310-00-138-6645, 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6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-138-6645
Item Name
Nut,plain,round
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Thread Series
UNEF
Thread Direction
LEFT-HAND
Nominal Thread Size
0.750 INCHES IN
Nut Diameter
2.188 INCHES NOMINAL IN
Nut Thickness
1.312 INCHES NOMINAL IN
Thread Quantity Per Inch
6
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
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
AB9065-17-1A
3/9Design control — primary reference
Aer-Bea Co Inc
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 5310-00-138-6645?
NSN 5310-00-138-6645 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
What are the specifications of 5310-00-138-6645?
Key specifications for 5310-00-138-6645: Thread Series: UNEF; Thread Direction: LEFT-HAND; Nominal Thread Size: 0.750 INCHES IN; Nut Diameter: 2.188 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-138-6645 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.