PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BW-9Wrench,open End

Williams J H Industrial Products Inc · NSN 5120-00-277-1248 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-1248 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-1248. Primary manufacturer part number: BW-9.
Features
  • Wrench,open End — FSC 5120
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
  • Material: STEEL OVERALL
  • Surface Treatment: ENAMEL OVERALL
  • Torque Capacity: 11300.0 INCH-POUNDS MINIMUM IN
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Style Designator: SINGLE HEAD
  • Wrenching Surface Size: 1.438 INCHES NOMINAL SINGLE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-1248, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-277-1248
Primary Part NumberBW-9
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerWilliams J H Industrial Products Inc
StatusCANCELLED
Hardness Rating40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
MaterialSTEEL OVERALL
Surface TreatmentENAMEL OVERALL
Torque Capacity11300.0 INCH-POUNDS MINIMUM IN
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Style DesignatorSINGLE HEAD
Wrenching Surface Size1.438 INCHES NOMINAL SINGLE END IN
Head Thickness0.875 INCHES MAXIMUM IN
Head Angle15.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5120-00-240-6083 INTERCHANGEABLE
Punch,drive Pin
2520-00-889-5627753230 INTERCHANGEABLE
Disk,lockout
Fwd Seagrave Holdings Lp
6550-01-162-4288231046 INTERCHANGEABLE
Differentiation Discs,microorgan
Becton, Dickinson and Company Dba Becton Dickinson & Co
2510-01-184-438231046 INTERCHANGEABLE
Cover,cab
Eaglepicher Corp
6680-01-245-7681 INTERCHANGEABLE
Transmitter,liquid Quantity
4320-01-263-005731046-02 INTERCHANGEABLE
Housing,liquid Pump
Itt Marlow a Unit of Itt Pumps and Compressors Div
1005-01-653-786231046 INTERCHANGEABLE
Handle,gun Charger
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
BW-9 Williams J H Industrial Products Inc (USA)
31-046 Apex Tool Group, Llc Dba Nicholson (USA)
31-046 Armstrong Bros Tool Co (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1018 Gray Div Warner and Swasey Co Sub of Cross and Trecker Corp (USA)
GGG-W-636 TY5 General Services Administration Federal Supply Service (USA)
31-046 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
9 Martin Sprocket and Gear Inc (USA)
A-A-1357 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
5120-00-240-6083INTERCHANGEABLE
PUNCH,DRIVE PIN
2520-00-889-5627INTERCHANGEABLE
DISK,LOCKOUT
753230
6550-01-162-4288INTERCHANGEABLE
DIFFERENTIATION DISCS,MICROORGAN
231046
2510-01-184-4382INTERCHANGEABLE
COVER,CAB
31046
6680-01-245-7681INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
4320-01-263-0057INTERCHANGEABLE
HOUSING,LIQUID PUMP
31046-02
1005-01-653-7862INTERCHANGEABLE
HANDLE,GUN CHARGER
31046

Frequently Asked Questions

What is NSN 5120-00-277-1248?

NSN 5120-00-277-1248 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 5120-00-277-1248?

NSN 5120-00-277-1248 has 9 cross-referenced part numbers: BW-9 (Williams J H Industrial Products Inc), 31-046 (Apex Tool Group, Llc Dba Nicholson), 31-046 (Armstrong Bros Tool Co), GGG-W-636 (Federal Specifications Promulgated by General Services Administration Washington DC), 1018 (Gray Div Warner and Swasey Co Sub of Cross and Trecker Corp) and 4 more.

What NSN replaces 5120-00-277-1248?

There are 7 known substitutes for 5120-00-277-1248: 5120-00-240-6083, 2520-00-889-5627, 6550-01-162-4288 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BW-9?

Key specifications for BW-9: Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM; Material: STEEL OVERALL; Surface Treatment: ENAMEL OVERALL; Torque Capacity: 11300.0 INCH-POUNDS MINIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-277-1248 still in active supply?

NSN 5120-00-277-1248 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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