PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12-947Universal Joint,socket Wrench at

Armstrong Bros Tool Co · NSN 5120-00-269-7971 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-269-7971 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-269-7971. Primary manufacturer part number: 12-947.
Features
  • Universal Joint,socket Wrench at — FSC 5120
  • Drive End Shape: SQUARE SECOND END INTERNAL
  • Style Designator: EXTERNAL-INTERNAL
  • Nondefinitive Spec/std Data: 2 TYPE AND 1 CLASS
  • Surface Treatment: CHROMIUM OVERALL
  • Features Provided: MANUAL TOOL
  • Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Universal Joint,socket Wrench at, cataloged under National Stock Number 5120-00-269-7971, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Bros Tool Co. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 18 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-269-7971
Primary Part Number12-947
Item NameUniversal Joint,socket Wrench at
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusCANCELLED
Drive End ShapeSQUARE SECOND END INTERNAL
Style DesignatorEXTERNAL-INTERNAL
Nondefinitive Spec/std Data2 TYPE AND 1 CLASS
Surface TreatmentCHROMIUM OVERALL
Features ProvidedMANUAL TOOL
Hardness Rating38.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM
MaterialSTEEL OVERALL
Drive Surface Size0.500 INCHES NOMINAL BOTH ENDS IN
Drive End ShapeSQUARE FIRST END EXTERNAL
Specification/standard Data0U583-SAE AS4283 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
Outside Diameter1.010 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-010-0149100149 INTERCHANGEABLE
Screw,cap,hexagon Head
General Motors Llc Dba General Motors Llc
3110-00-108-9346177039-65 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
8010-00-133-5414 INTERCHANGEABLE
Thinner,paint Products
5950-00-148-3982 INTERCHANGEABLE
Transformer,power
6110-00-152-8967S8 INTERCHANGEABLE
Panel,power Distribution
Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co
3110-00-155-8869056-9 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
5120-00-224-9215 INTERCHANGEABLE
Universal Joint,socket Wrench at
5950-00-230-502812947F INTERCHANGEABLE
Coil,radio Frequency
Viking Technologies, Ltd.
5120-00-241-3188 INTERCHANGEABLE
Nutdriver
5120-00-243-1686 INTERCHANGEABLE
Universal Joint,socket Wrench at
Cross-Reference Index
Part NumberManufacturer
12-947 Armstrong Bros Tool Co (USA)
UJ-12 Jbs Tools (AUS)
B107.10M The American Society of Mechanical Engineers (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5166189 Naval Sea Systems Command (USA)
B107.10 The American Society of Mechanical Engineers (USA)
AS4283 TY2CL1 General Services Administration Federal Supply Service (USA)
0738 7108 Blackwood J. Blackwood & Son Pty Ltd (AUS)
456720015904 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
A-A-2169 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B107.10M TY2CL1 General Services Administration Federal Supply Service (USA)
S140 Ducommun Metals Co (USA)
12-947 Apex Tool Group, Llc Dba Nicholson (USA)
AS4283 Sae International Dba Sae International (USA)
S8 Sna Germany Gmbh (DEU)
12-947 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
4492861193 Lemvigh-Muller A/s (DNK)
10424475 Nimikkeistokeskus Ncb Finland (FIN)
AS4283 Society of Automotive Engineers Inc (USA)
B107.10 TY2CL1 General Services Administration Federal Supply Service (USA)
Related Parts
5305-00-010-0149INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
100149
3110-00-108-9346INTERCHANGEABLE
BEARING,BALL,ANNULAR
177039-65
8010-00-133-5414INTERCHANGEABLE
THINNER,PAINT PRODUCTS
5950-00-148-3982INTERCHANGEABLE
TRANSFORMER,POWER
6110-00-152-8967INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
S8
3110-00-155-8869INTERCHANGEABLE
BEARING,BALL,ANNULAR
056-9
5120-00-224-9215INTERCHANGEABLE
UNIVERSAL JOINT,SOCKET WRENCH AT
5950-00-230-5028INTERCHANGEABLE
COIL,RADIO FREQUENCY
12947F
5120-00-241-3188INTERCHANGEABLE
NUTDRIVER
5120-00-243-1686INTERCHANGEABLE
UNIVERSAL JOINT,SOCKET WRENCH AT
5120-00-243-1687INTERCHANGEABLE
UNIVERSAL JOINT,SOCKET WRENCH AT
1650-00-349-5321INTERCHANGEABLE
HEAD,VALVE

Frequently Asked Questions

What is NSN 5120-00-269-7971?

NSN 5120-00-269-7971 is a Universal Joint,socket Wrench at, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-269-7971?

NSN 5120-00-269-7971 has 23 cross-referenced part numbers: 12-947 (Armstrong Bros Tool Co), UJ-12 (Jbs Tools), B107.10M (The American Society of Mechanical Engineers), GGG-W-641 (Federal Specifications Promulgated by General Services Administration Washington DC), 5166189 (Naval Sea Systems Command) and 18 more.

What NSN replaces 5120-00-269-7971?

There are 12 known substitutes for 5120-00-269-7971: 5305-00-010-0149, 3110-00-108-9346, 8010-00-133-5414 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12-947?

Key specifications for 12-947: Drive End Shape: SQUARE SECOND END INTERNAL; Style Designator: EXTERNAL-INTERNAL; Nondefinitive Spec/std Data: 2 TYPE AND 1 CLASS; Surface Treatment: CHROMIUM OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-269-7971 still in active supply?

NSN 5120-00-269-7971 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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