PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS954 TY1CL1STBSocket,socket Wrench

General Services Administration Federal Supply Service · NSN 5120-01-579-1012 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-579-1012 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-579-1012. Primary manufacturer part number: AS954 TY1CL1STB.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Opening Depth: 0.844 INCHES NOMINAL IN
  • Drive End Outside Diameter: 1.563 INCHES NOMINAL IN
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Size: 1.188 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-579-1012, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-579-1012
Primary Part NumberAS954 TY1CL1STB
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusACTIVE
Wrenching End Opening Depth0.844 INCHES NOMINAL IN
Drive End Outside Diameter1.563 INCHES NOMINAL IN
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size1.188 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Wrenching End Outside Diameter1.563 INCHES NOMINAL IN
Drive End ShapeSQUARE SINGLE END INTERNAL
Features ProvidedMANUAL TOOL
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND B STYLE
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5310-00-025-730912338 INTERCHANGEABLE
Washer,flat
Cae Usa Inc.
5970-00-073-1860123-0038 INTERCHANGEABLE
Insulator,bushing
Avionics Specialties, Inc.
6210-00-236-4024 INTERCHANGEABLE
Light,indicator
5950-00-461-9088 INTERCHANGEABLE
Transformer,audio Frequency
2990-01-066-927312-338 INTERCHANGEABLE
Muffler,exhaust
Thermo King Corporation Dba Phoenix Global Distirbution.
3040-01-142-7950 INTERCHANGEABLE
Splined Sleeve
5950-01-148-222912338 INTERCHANGEABLE
Transformer
Giga-Tronics Incorporated Dba Giga-Tronics
4730-01-171-7185SB NOZZLE--CRES INTERCHANGEABLE
Parts Kit,nozzle Web
Naval Ship Systems Command
4730-01-297-5274803-1385828PC6 INTERCHANGEABLE
Web,nozzle
Naval Ship Systems Command
2590-01-347-323212338 INTERCHANGEABLE
Bracket,vehicular Components
DP Manufacturing Inc.
Cross-Reference Index
Part NumberManufacturer
AS954 TY1CL1STB General Services Administration Federal Supply Service (USA)
B107.1 TY1CL2 General Services Administration Federal Supply Service (USA)
12-338 Armstrong Bros Tool Co (USA)
12-338 Apex Tool Group, Llc Dba Nicholson (USA)
AS954 Society of Automotive Engineers Inc (USA)
B107.1 The American Society of Mechanical Engineers (USA)
12-338 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
AS954 Sae International Dba Sae International (USA)
Related Parts
5310-00-025-7309INTERCHANGEABLE
WASHER,FLAT
12338
5970-00-073-1860INTERCHANGEABLE
INSULATOR,BUSHING
123-0038
6210-00-236-4024INTERCHANGEABLE
LIGHT,INDICATOR
5950-00-461-9088INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
2990-01-066-9273INTERCHANGEABLE
MUFFLER,EXHAUST
12-338
3040-01-142-7950INTERCHANGEABLE
SPLINED SLEEVE
5950-01-148-2229INTERCHANGEABLE
TRANSFORMER
12338
4730-01-171-7185INTERCHANGEABLE
PARTS KIT,NOZZLE WEB
SB NOZZLE--CRES
4730-01-297-5274INTERCHANGEABLE
WEB,NOZZLE
803-1385828PC6
2590-01-347-3232INTERCHANGEABLE
BRACKET,VEHICULAR COMPONENTS
12338

Frequently Asked Questions

What is NSN 5120-01-579-1012?

NSN 5120-01-579-1012 is a Socket,socket Wrench, manufactured by General Services Administration Federal Supply Service, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-579-1012?

NSN 5120-01-579-1012 has 8 cross-referenced part numbers: AS954 TY1CL1STB (General Services Administration Federal Supply Service), B107.1 TY1CL2 (General Services Administration Federal Supply Service), 12-338 (Armstrong Bros Tool Co), 12-338 (Apex Tool Group, Llc Dba Nicholson), AS954 (Society of Automotive Engineers Inc) and 3 more.

What NSN replaces 5120-01-579-1012?

There are 10 known substitutes for 5120-01-579-1012: 5310-00-025-7309, 5970-00-073-1860, 6210-00-236-4024 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS954 TY1CL1STB?

Key specifications for AS954 TY1CL1STB: Wrenching End Opening Depth: 0.844 INCHES NOMINAL IN; Drive End Outside Diameter: 1.563 INCHES NOMINAL IN; Style Designator: INTERNAL-INTERNAL; Wrenching Surface Size: 1.188 INCHES NOMINAL SINGLE END IN. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com