PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37-004Socket,socket Wrench

Armstrong Bros Tool Co · NSN 5120-01-500-9624 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-500-9624 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-500-9624. Primary manufacturer part number: 37-004.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Opening Depth: 4.6 MILLIMETERS NOMINAL MM
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Size: 4.0 MILLIMETERS NOMINAL SINGLE END MM
  • Wrenching Surface Shape: 6 POINT SINGLE END INTERNAL
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMIUM OVERALL
  • Features Provided: MANUAL TOOL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-500-9624, 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 10 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-500-9624
Primary Part Number37-004
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
Wrenching End Opening Depth4.6 MILLIMETERS NOMINAL MM
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size4.0 MILLIMETERS NOMINAL SINGLE END MM
Wrenching Surface Shape6 POINT SINGLE END INTERNAL
MaterialSTEEL OVERALL
Surface TreatmentCHROMIUM OVERALL
Features ProvidedMANUAL TOOL
Drive Surface Size0.250 INCHES NOMINAL SINGLE END IN
Drive End Outside Diameter6.9 MILLIMETERS NOMINAL MM
Wrenching End Outside Diameter11.4 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4820-00-136-2080BFVR 700-1C INTERCHANGEABLE
Seat,valve
Victaulic Company of America Inc Dba Victaulic Company of America
3020-00-262-694403249119 INTERCHANGEABLE
Gear,spur
Rolls-Royce Solutions America Inc
5365-00-752-1737 INTERCHANGEABLE
Spacer,sleeve
6145-01-212-134137004 INTERCHANGEABLE
Wire,electrical
Belden Wire and Cable Co Wire and Cable Office
6605-01-695-700137004 INTERCHANGEABLE
Case,unmounted Magnetic Compass
Envistacom, L.l.c
Cross-Reference Index
Part NumberManufacturer
37-004 Armstrong Bros Tool Co (USA)
37-004 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
37-004 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
4820-00-136-2080INTERCHANGEABLE
SEAT,VALVE
BFVR 700-1C
3020-00-262-6944INTERCHANGEABLE
GEAR,SPUR
03249119
5365-00-752-1737INTERCHANGEABLE
SPACER,SLEEVE
6145-01-212-1341INTERCHANGEABLE
WIRE,ELECTRICAL
37004
6605-01-695-7001INTERCHANGEABLE
CASE,UNMOUNTED MAGNETIC COMPASS
37004

Frequently Asked Questions

What is NSN 5120-01-500-9624?

NSN 5120-01-500-9624 is a Socket,socket Wrench, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-500-9624?

NSN 5120-01-500-9624 has 3 cross-referenced part numbers: 37-004 (Armstrong Bros Tool Co), 37-004 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 37-004 (Apex Tool Group, Llc Dba Nicholson).

What NSN replaces 5120-01-500-9624?

There are 5 known substitutes for 5120-01-500-9624: 4820-00-136-2080, 3020-00-262-6944, 5365-00-752-1737 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37-004?

Key specifications for 37-004: Overall Length: 21.3 MILLIMETERS NOMINAL MM; Wrenching End Opening Depth: 4.6 MILLIMETERS NOMINAL MM; Style Designator: INTERNAL-INTERNAL; Wrenching Surface Size: 4.0 MILLIMETERS NOMINAL SINGLE END MM. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com