PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1037AWrench,open End

Williams J H Industrial Products Inc · NSN 5120-00-184-8438 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-184-8438 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-184-8438. Primary manufacturer part number: 1037A.
Features
  • Wrench,open End — FSC 5120
  • Wrenching Surface Size: 1.125 INCHES NOMINAL FIRST END IN
  • Large End Head Angle: 15.0 DEGREES NOMINAL
  • Wrenching Surface Size: 1.312 INCHES NOMINAL SECOND END IN
  • Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
  • Surface Treatment: CHROMIUM OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE
  • Large End Head Thickness: 0.563 INCHES MAXIMUM IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-184-8438, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Williams J H Industrial Products Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-184-8438
Primary Part Number1037A
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerWilliams J H Industrial Products Inc
StatusCANCELLED
Wrenching Surface Size1.125 INCHES NOMINAL FIRST END IN
Large End Head Angle15.0 DEGREES NOMINAL
Wrenching Surface Size1.312 INCHES NOMINAL SECOND END IN
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
Surface TreatmentCHROMIUM OVERALL
Nondefinitive Spec/std Data1 TYPE
Large End Head Thickness0.563 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Small End Head Thickness0.500 INCHES MAXIMUM IN
Small End Head Angle15.0 DEGREES NOMINAL
Style DesignatorDOUBLE HEAD
Wrenching Surface ShapeOVAL BOTH ENDS INTERNAL
Specification/standard Data05047-ASME B107.100 CAT 39 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3010-00-128-270111190 INTERCHANGEABLE
Yoke,clutch Throwout
Garwood/feller Inc Garwood Winch Div
3110-00-151-9621 INTERCHANGEABLE
Ball,bearing
4730-00-278-8824200455 INTERCHANGEABLE
Nut,tube Coupling
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5930-00-548-78473Z9857-40 INTERCHANGEABLE
Switch,toggle
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5340-00-776-705220-045-5 INTERCHANGEABLE
Boot,dust and Moisture Seal
Bell Textron Inc
3110-00-950-4236 INTERCHANGEABLE
Ball,bearing
7610-01-315-452135049 INTERCHANGEABLE
Manual,technical
Oklahoma State University
5342-01-492-6926200455 INTERCHANGEABLE
Anchor Strap
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
5315-01-553-0430200455 INTERCHANGEABLE
Pin,cotter
M. E. Industries, Inc.
6150-01-617-7227 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Cross-Reference Index
Part NumberManufacturer
1037A Williams J H Industrial Products Inc (USA)
35049 Msc Industrial Supply (USA)
20-0455 Martin Sprocket and Gear Inc (USA)
1037A Trw Inc Hand Tools Div Trw Industrial Products Group (USA)
B107.100 The American Society of Mechanical Engineers (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
B107.100 CAT 39 TY1CL1 General Services Administration Federal Supply Service (USA)
A-A-1356 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B107.39 The American Society of Mechanical Engineers (USA)
B107.100 CAT 39 TY1 General Services Administration Federal Supply Service (USA)
B107.39 TY1CL1 General Services Administration Federal Supply Service (USA)
06006415 Msc Industrial Supply (USA)
1037A Martin Sprocket and Gear Inc (USA)
1037A Bonney Forge Corp (USA)
GGG-W-636 TY4 General Services Administration Federal Supply Service (USA)
Related Parts
3010-00-128-2701INTERCHANGEABLE
YOKE,CLUTCH THROWOUT
11190
3110-00-151-9621INTERCHANGEABLE
BALL,BEARING
4730-00-278-8824INTERCHANGEABLE
NUT,TUBE COUPLING
200455
5930-00-548-7847INTERCHANGEABLE
SWITCH,TOGGLE
3Z9857-40
5340-00-776-7052INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
20-045-5
3110-00-950-4236INTERCHANGEABLE
BALL,BEARING
7610-01-315-4521INTERCHANGEABLE
MANUAL,TECHNICAL
35049
5342-01-492-6926INTERCHANGEABLE
ANCHOR STRAP
200455
5315-01-553-0430INTERCHANGEABLE
PIN,COTTER
200455
6150-01-617-7227INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E

Frequently Asked Questions

What is NSN 5120-00-184-8438?

NSN 5120-00-184-8438 is a Wrench,open End, manufactured by Williams J H Industrial Products Inc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-184-8438?

NSN 5120-00-184-8438 has 15 cross-referenced part numbers: 1037A (Williams J H Industrial Products Inc), 35049 (Msc Industrial Supply), 20-0455 (Martin Sprocket and Gear Inc), 1037A (Trw Inc Hand Tools Div Trw Industrial Products Group), B107.100 (The American Society of Mechanical Engineers) and 10 more.

What NSN replaces 5120-00-184-8438?

There are 10 known substitutes for 5120-00-184-8438: 3010-00-128-2701, 3110-00-151-9621, 4730-00-278-8824 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1037A?

Key specifications for 1037A: Wrenching Surface Size: 1.125 INCHES NOMINAL FIRST END IN; Large End Head Angle: 15.0 DEGREES NOMINAL; Wrenching Surface Size: 1.312 INCHES NOMINAL SECOND END IN; Overall Length: 12.5 INCHES MAXIMUM IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-184-8438 still in active supply?

NSN 5120-00-184-8438 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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