PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS955Socket,socket Wrench

Society of Automotive Engineers Inc · NSN 5120-01-599-4558 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-599-4558 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-599-4558. Primary manufacturer part number: AS955.
Features
  • Socket,socket Wrench — FSC 5120
  • Material: STEEL OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE
  • Surface Treatment: CHROMIUM OVERALL
  • Drive Surface Size: 0.250 INCHES NOMINAL SECOND END IN
  • Specification/standard Data: 0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Features Provided: MANUAL TOOL
  • Wrenching Surface Shape: 12 POINT FIRST END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-599-4558, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Society of Automotive Engineers Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-599-4558
Primary Part NumberAS955
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerSociety of Automotive Engineers Inc
StatusACTIVE
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND A STYLE
Surface TreatmentCHROMIUM OVERALL
Drive Surface Size0.250 INCHES NOMINAL SECOND END IN
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Features ProvidedMANUAL TOOL
Wrenching Surface Shape12 POINT FIRST END INTERNAL
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size8.0 MILLIMETERS NOMINAL FIRST END MM
Drive End ShapeSQUARE SECOND END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-983828680 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5315-00-215-302280202 INTERCHANGEABLE
Pin,straight,headed
Hamilton Sundstrand Corporation Dba Collins Aerospace
5935-00-259-012880202-01 INTERCHANGEABLE
Connector,receptacle,electrical
Ge Aviation Systems Llc
6125-00-548-054738-104 INTERCHANGEABLE
Armature-Rotor,motor-Generator
Electric Boat Corporation Div General Dynamics Electric Boat
7920-00-782-3784538756 INTERCHANGEABLE
Floor Cleaning Mop
Home Depot
1630-01-034-574037108 INTERCHANGEABLE
Rod
Parker-Hannifin Corporation Dba Control Systems Division
6145-01-212-160437108 INTERCHANGEABLE
Wire,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
6110-01-261-4701 INTERCHANGEABLE
Panel,power Distribution
5999-01-433-970037108 INTERCHANGEABLE
Shielding Gasket,electronic
Hoosier, Inc.
5930-01-552-814237108 INTERCHANGEABLE
Switch,rotary
Conductix Inc Div Conductix Wampfler
Cross-Reference Index
Part NumberManufacturer
AS955 Society of Automotive Engineers Inc (USA)
AS955 Sae International Dba Sae International (USA)
AS954 TY1CL1STA General Services Administration Federal Supply Service (USA)
37-108 Armstrong Bros Tool Co (USA)
456720003405 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
37-108 Apex Tool Group, Llc Dba Nicholson (USA)
AS954 Sae International Dba Sae International (USA)
37-108 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
AS955 TY1CL1STA General Services Administration Federal Supply Service (USA)
80202 Apex Tool Group, Llc Dba Nicholson (USA)
PAR-R2038 Supplies Now Inc (USA)
Related Parts
3110-00-100-9838INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
28680
5315-00-215-3022INTERCHANGEABLE
PIN,STRAIGHT,HEADED
80202
5935-00-259-0128INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
80202-01
6125-00-548-0547INTERCHANGEABLE
ARMATURE-ROTOR,MOTOR-GENERATOR
38-104
7920-00-782-3784INTERCHANGEABLE
FLOOR CLEANING MOP
538756
1630-01-034-5740INTERCHANGEABLE
ROD
37108
6145-01-212-1604INTERCHANGEABLE
WIRE,ELECTRICAL
37108
6110-01-261-4701INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
5999-01-433-9700INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
37108
5930-01-552-8142INTERCHANGEABLE
SWITCH,ROTARY
37108
5340-01-579-7976INTERCHANGEABLE
PLATE,MOUNTING
80202
5325-01-624-7127INTERCHANGEABLE
INSERT AND TOOL SET,SCREW THREAD
37108

Frequently Asked Questions

What is NSN 5120-01-599-4558?

NSN 5120-01-599-4558 is a Socket,socket Wrench, manufactured by Society of Automotive Engineers Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-599-4558?

NSN 5120-01-599-4558 has 11 cross-referenced part numbers: AS955 (Society of Automotive Engineers Inc), AS955 (Sae International Dba Sae International), AS954 TY1CL1STA (General Services Administration Federal Supply Service), 37-108 (Armstrong Bros Tool Co), 456720003405 (Ncb Hungary (honvedsegi Egyseges Termekkod)) and 6 more.

What NSN replaces 5120-01-599-4558?

There are 12 known substitutes for 5120-01-599-4558: 3110-00-100-9838, 5315-00-215-3022, 5935-00-259-0128 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS955?

Key specifications for AS955: Overall Length: 32.25 MILLIMETERS MAXIMUM MM; Material: STEEL OVERALL; Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE; Surface Treatment: CHROMIUM OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

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