PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27-854Wrench,open End

Armstrong Bros Tool Co · NSN 5120-01-504-9712 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-504-9712 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-504-9712. Primary manufacturer part number: 27-854.
Features
  • Wrench,open End — FSC 5120
  • Large End Head Thickness: 0.484 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Style Designator: DOUBLE HEAD
  • Small End Head Thickness: 0.484 INCHES NOMINAL IN
  • Small End Head Angle: 15.0 DEGREES NOMINAL
  • Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL
  • Large End Head Angle: 60.0 DEGREES NOMINAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-01-504-9712, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-504-9712
Primary Part Number27-854
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
Large End Head Thickness0.484 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Style DesignatorDOUBLE HEAD
Small End Head Thickness0.484 INCHES NOMINAL IN
Small End Head Angle15.0 DEGREES NOMINAL
Wrenching Surface ShapeOVAL BOTH ENDS INTERNAL
Large End Head Angle60.0 DEGREES NOMINAL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Size1.688 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5340-00-033-6209 INTERCHANGEABLE
Cover,access
5930-00-242-008527854 INTERCHANGEABLE
Switch,liquid Level
Setra Systems, Inc. Dba Gems Sensors
2990-00-896-2166 INTERCHANGEABLE
Control Assembly,push-Pull
5950-00-930-0072 INTERCHANGEABLE
Coil,radio Frequency
3010-01-375-732427884 INTERCHANGEABLE
Clutch,positive,nonvehicular
Qbm Ohio Inc
3040-01-375-7384 INTERCHANGEABLE
Brake Drum
3110-01-505-3407108022 INTERCHANGEABLE
Bearing,roller,tapered
Paccar Winch Inc Dba Paccar Winch Division
Cross-Reference Index
Part NumberManufacturer
27-854 Armstrong Bros Tool Co (USA)
27-854 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
27-854 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
5340-00-033-6209INTERCHANGEABLE
COVER,ACCESS
5930-00-242-0085INTERCHANGEABLE
SWITCH,LIQUID LEVEL
27854
2990-00-896-2166INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
5950-00-930-0072INTERCHANGEABLE
COIL,RADIO FREQUENCY
3010-01-375-7324INTERCHANGEABLE
CLUTCH,POSITIVE,NONVEHICULAR
27884
3040-01-375-7384INTERCHANGEABLE
BRAKE DRUM
3110-01-505-3407INTERCHANGEABLE
BEARING,ROLLER,TAPERED
108022

Frequently Asked Questions

What is NSN 5120-01-504-9712?

NSN 5120-01-504-9712 is a Wrench,open End, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-504-9712?

NSN 5120-01-504-9712 has 3 cross-referenced part numbers: 27-854 (Armstrong Bros Tool Co), 27-854 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 27-854 (Apex Tool Group, Llc Dba Nicholson).

What NSN replaces 5120-01-504-9712?

There are 7 known substitutes for 5120-01-504-9712: 5340-00-033-6209, 5930-00-242-0085, 2990-00-896-2166 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27-854?

Key specifications for 27-854: Overall Length: 16.562 INCHES NOMINAL IN; Large End Head Thickness: 0.484 INCHES NOMINAL IN; Material: STEEL OVERALL; Style Designator: DOUBLE HEAD. 10 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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