PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FRS S321Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-674-0812 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-674-0812 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-674-0812. Primary manufacturer part number: FRS S321.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Opening Depth: 0.750 INCHES NOMINAL IN
  • Drive End Outside Diameter: 1.281 INCHES NOMINAL IN
  • Surface Treatment: CHROMIUM OVERALL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Size: 1.000 INCHES NOMINAL SINGLE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-674-0812, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-674-0812
Primary Part NumberFRS S321
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerIdsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
StatusCANCELLED
Wrenching End Opening Depth0.750 INCHES NOMINAL IN
Drive End Outside Diameter1.281 INCHES NOMINAL IN
Surface TreatmentCHROMIUM OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size1.000 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL AND OFF THE POINT WRENCHING
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND B STYLE
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
6810-00-034-67080CEN155 INTERCHANGEABLE
Sodium Hypophosphit
Occidental Chemical Corp. Dba Oxychem
5120-00-222-2023 INTERCHANGEABLE
Socket,socket Wrench
4730-00-278-457568-4-4 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Brass Craft Mfg Co Sub of Masco Corp
5330-00-374-285325271-192 INTERCHANGEABLE
Seal,mechanical,rotary Shaft
The Gorman-Rupp Company Div Gorman-Rupp
5360-00-527-2436S321 INTERCHANGEABLE
Spring,helical,compression
Merck and Co Inc
5935-00-581-6694954716 INTERCHANGEABLE
Connector,plug,electrical
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5120-01-039-8106 INTERCHANGEABLE
Socket,socket Wrench
5120-01-535-8151P12613718 INTERCHANGEABLE
Wrench Set,socket
Fairbanks Morse, Llc
5120-01-718-8480DWMT45007 INTERCHANGEABLE
Wrench Set,socket
Dewalt Industrial Tool Co
Cross-Reference Index
Part NumberManufacturer
11A7000789-11 Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army (USA)
AS954 TY1CL1 General Services Administration Federal Supply Service (USA)
AS954 TY1CL1STB General Services Administration Federal Supply Service (USA)
S321 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
AS954 Sae International Dba Sae International (USA)
FRS S321 PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
Related Parts
6810-00-034-6708INTERCHANGEABLE
SODIUM HYPOPHOSPHIT
0CEN155
5120-00-222-2023INTERCHANGEABLE
SOCKET,SOCKET WRENCH
4730-00-278-4575INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
68-4-4
5330-00-374-2853INTERCHANGEABLE
SEAL,MECHANICAL,ROTARY SHAFT
25271-192
5360-00-527-2436INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
S321
5935-00-581-6694INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
954716
5120-01-039-8106INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-535-8151INTERCHANGEABLE
WRENCH SET,SOCKET
P12613718
5120-01-718-8480INTERCHANGEABLE
WRENCH SET,SOCKET
DWMT45007

Frequently Asked Questions

What is NSN 5120-01-674-0812?

NSN 5120-01-674-0812 is a Socket,socket Wrench, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-01-674-0812?

NSN 5120-01-674-0812 has 6 cross-referenced part numbers: 11A7000789-11 (Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army), AS954 TY1CL1 (General Services Administration Federal Supply Service), AS954 TY1CL1STB (General Services Administration Federal Supply Service), S321 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), AS954 (Sae International Dba Sae International) and 1 more.

What NSN replaces 5120-01-674-0812?

There are 9 known substitutes for 5120-01-674-0812: 6810-00-034-6708, 5120-00-222-2023, 4730-00-278-4575 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FRS S321?

Key specifications for FRS S321: Overall Length: 2.930 INCHES MINIMUM IN; Wrenching End Opening Depth: 0.750 INCHES NOMINAL IN; Drive End Outside Diameter: 1.281 INCHES NOMINAL IN; Surface Treatment: CHROMIUM OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-674-0812 still in active supply?

NSN 5120-01-674-0812 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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