PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-1357Wrench,open End

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 5120-00-277-1262 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-1262 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-1262. Primary manufacturer part number: A-A-1357.
Features
  • Wrench,open End — FSC 5120
  • Wrenching Surface Size: 0.438 INCHES NOMINAL SINGLE END IN
  • Style Designator: SINGLE HEAD
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Torque Capacity: 760.0 INCH-POUNDS MINIMUM IN
  • Surface Treatment: ENAMEL AND CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Head Angle: 15.0 DEGREES NOMINAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-1262, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 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
NSN5120-00-277-1262
Primary Part NumberA-A-1357
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusCANCELLED
Wrenching Surface Size0.438 INCHES NOMINAL SINGLE END IN
Style DesignatorSINGLE HEAD
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Torque Capacity760.0 INCH-POUNDS MINIMUM IN
Surface TreatmentENAMEL AND CHROMIUM OVERALL
MaterialSTEEL OVERALL
Head Angle15.0 DEGREES NOMINAL
Head Thickness0.312 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5905-00-072-837631014 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Cvc Products Inc
5315-00-483-954931014 INTERCHANGEABLE
Pin,straight,headed
Moog Military Aircraft Llc
5310-00-684-338031014 INTERCHANGEABLE
Washer,flat
L3harris Technologies, Inc. Div Space and Airborne Systems
2510-00-700-21993-10-14 INTERCHANGEABLE
Pin Rear Spring
Trailmobile Inc Sub of the Pullman Co
5133-00-841-8759 INTERCHANGEABLE
Drill,twist
2925-00-895-396531014 INTERCHANGEABLE
Parts Kit,exciter Unit
Unison Industries Llc
5331-01-168-5505 INTERCHANGEABLE
O-Ring
6515-01-180-3231310.14 INTERCHANGEABLE
Drill,twist,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
8115-01-263-36523-1014 INTERCHANGEABLE
Box,small Parts
Daniels Manufacturing Corporation
5330-01-335-6942310-1/4 INTERCHANGEABLE
Packing Material
Sealing Equipment Products Co, Inc Div Sealing Equipment Products Company, Inc.
Cross-Reference Index
Part NumberManufacturer
A-A-1357 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
31-014 Apex Tool Group, Llc Dba Nicholson (USA)
GGG-W-636 TY5 General Services Administration Federal Supply Service (USA)
31-014 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
31-014 Armstrong Bros Tool Co (USA)
701 Trw Inc Hand Tools Div Trw Industrial Products Group (USA)
Related Parts
5905-00-072-8376INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
31014
5315-00-483-9549INTERCHANGEABLE
PIN,STRAIGHT,HEADED
31014
5310-00-684-3380INTERCHANGEABLE
WASHER,FLAT
31014
2510-00-700-2199INTERCHANGEABLE
PIN REAR SPRING
3-10-14
5133-00-841-8759INTERCHANGEABLE
DRILL,TWIST
2925-00-895-3965INTERCHANGEABLE
PARTS KIT,EXCITER UNIT
31014
5331-01-168-5505INTERCHANGEABLE
O-RING
6515-01-180-3231INTERCHANGEABLE
DRILL,TWIST,BONE
310.14
8115-01-263-3652INTERCHANGEABLE
BOX,SMALL PARTS
3-1014
5330-01-335-6942INTERCHANGEABLE
PACKING MATERIAL
310-1/4
5360-01-412-6319INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
638031014
4920-01-583-6609INTERCHANGEABLE
CHEMICAL PUMP,AIRCR
31014

Frequently Asked Questions

What is NSN 5120-00-277-1262?

NSN 5120-00-277-1262 is a Wrench,open End, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-277-1262?

NSN 5120-00-277-1262 has 7 cross-referenced part numbers: A-A-1357 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GGG-W-636 (Federal Specifications Promulgated by General Services Administration Washington DC), 31-014 (Apex Tool Group, Llc Dba Nicholson), GGG-W-636 TY5 (General Services Administration Federal Supply Service), 31-014 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.) and 2 more.

What NSN replaces 5120-00-277-1262?

There are 12 known substitutes for 5120-00-277-1262: 5905-00-072-8376, 5315-00-483-9549, 5310-00-684-3380 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-1357?

Key specifications for A-A-1357: Overall Length: 4.750 INCHES MINIMUM IN; Wrenching Surface Size: 0.438 INCHES NOMINAL SINGLE END IN; Special Features: FORGED STEEL; Style Designator: SINGLE HEAD. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-277-1262 still in active supply?

NSN 5120-00-277-1262 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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