NSN 5310-00-313-7625 · NIIN 003137625 · Part number 51665
L3harris Technologies, Inc Div Space & Airborne Systems · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 24930
Government record, cited
NSN 5310-00-313-7625 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-313-7625. Manufacturer of record part number: 51665.
Also searched as5310-00-313-7625 ·
5310003137625 ·
NIIN 003137625 ·
00-313-7625 ·
FSC 5310 Nuts and Washers · CAGE 24930 · 51665
Width Across Flats: 0.430 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN
Surface Treatment Document and Classification: QQ-S-365,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series: UNF
Precious Material: SILVER
Material Document and Classification: QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Direction: RIGHT-HAND
Nominal Thread Size: 0.312 INCHES IN
Identification
NSN: 5310-00-313-7625
NIIN: 003137625
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 51665
Manufacturer: L3harris Technologies, Inc Div Space & Airborne Systems
General Description
The Nut,plain,round, cataloged under National Stock Number 5310-00-313-7625, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 14 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. 7 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
5310-00-313-7625
Primary Part Number
51665
Item Name
Nut,plain,round
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
L3harris Technologies, Inc Div Space & Airborne Systems
Status
ACTIVE
Width Across Flats
0.430 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN
Surface Treatment Document and Classification
QQ-S-365,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Series
UNF
Precious Material
SILVER
Material Document and Classification
QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thread Direction
RIGHT-HAND
Nominal Thread Size
0.312 INCHES IN
Nut Diameter
0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
Nut Thickness
0.078 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
Surface Treatment
SILVER OVERALL
Nut Style
ROUND
Thread Class
3B
Thread Quantity Per Inch
24
Material
COPPER ALLOY 360 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
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5330-00-435-110651665POSSIBLE MATCH
PACKING
Possible match (shared part number)Parker Hannifin Corporation Div Hydraulic Systems Division
2990-00-737-031651665POSSIBLE MATCH
SPRING,REWIND,STARTER
Possible match (shared part number)Mcculloch Corp
1005-00-831-1397POSSIBLE MATCH
GRIP,PISTOL
Possible match (shared part number)
5930-01-227-89275M1692-003LPOSSIBLE MATCH
SWITCH ASSEMBLY
Possible match (shared part number)The Boeing Company Div Defense
2540-01-484-530551665-RPOSSIBLE MATCH
PEDAL,CONTROL
Possible match (shared part number)Aerol Llc
2540-01-484-531051665-LPOSSIBLE MATCH
PEDAL,CONTROL
Possible match (shared part number)Aerol Llc
2920-01-663-4284515665-2POSSIBLE MATCH
LEAD,IGNITION,ENGINE
Possible match (shared part number)Unison Industries Llc
L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
5330-00-435-1106POSSIBLE MATCH
PACKING
51665
2990-00-737-0316POSSIBLE MATCH
SPRING,REWIND,STARTER
51665
1005-00-831-1397POSSIBLE MATCH
GRIP,PISTOL
5930-01-227-8927POSSIBLE MATCH
SWITCH ASSEMBLY
5M1692-003L
2540-01-484-5305POSSIBLE MATCH
PEDAL,CONTROL
51665-R
2540-01-484-5310POSSIBLE MATCH
PEDAL,CONTROL
51665-L
2920-01-663-4284POSSIBLE MATCH
LEAD,IGNITION,ENGINE
515665-2
Frequently Asked Questions
What is NSN 5310-00-313-7625?
NSN 5310-00-313-7625 is a Nut,plain,round, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-313-7625?
NSN 5310-00-313-7625 has 1 manufacturer part number on file: 51665 (L3harris Technologies, Inc Div Space & Airborne Systems).
What NSN replaces 5310-00-313-7625?
7 possible matches (shared part number, not a government interchangeability claim): 5330-00-435-1106, 2990-00-737-0316, 1005-00-831-1397. Verify interchangeability with system specifications before substitution.
What are the specifications of 51665?
Key specifications for 51665: Width Across Flats: 0.430 INCHES MINIMUM AND 0.435 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-S-365,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Precious Material: SILVER. 14 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-313-7625 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.