PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H1820Wrench,box

S K Hand Tool Corp · NSN 5120-01-651-4157 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-651-4157 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-651-4157. Primary manufacturer part number: H1820.
Features
  • Wrench,box — FSC 5120
  • Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.625 INCHES NOMINAL SECOND END IN
  • Wrenching Surface Size: 0.563 INCHES NOMINAL FIRST END IN
  • Style Designator: HALF-MOON DOUBLE HEAD
  • 2 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-01-651-4157, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is S K Hand Tool Corp. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-651-4157
Primary Part NumberH1820
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerS K Hand Tool Corp
StatusACTIVE
Wrenching Surface Shape12 POINT BOTH ENDS INTERNAL
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Size0.625 INCHES NOMINAL SECOND END IN
Wrenching Surface Size0.563 INCHES NOMINAL FIRST END IN
Style DesignatorHALF-MOON DOUBLE HEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5120-00-184-86316299 INTERCHANGEABLE
Wrench,box
Walz & Krenzer Inc Div Mapeco Products
5120-00-222-1596CX1820 INTERCHANGEABLE
Wrench,box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-00-222-15978212484 INTERCHANGEABLE
Wrench,box
Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc
5120-00-277-2682 INTERCHANGEABLE
Wrench,box
5120-01-367-3315CX1416 INTERCHANGEABLE
Wrench,box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-378-5767CX2024 INTERCHANGEABLE
Wrench,box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-378-6296CX2830 INTERCHANGEABLE
Wrench,box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-378-6471CX2226 INTERCHANGEABLE
Wrench,box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-399-8876 INTERCHANGEABLE
Wrench,box
5120-01-601-5163 INTERCHANGEABLE
Wrench,box
Cross-Reference Index
Part NumberManufacturer
H1820 S K Hand Tool Corp (USA)
A-A-1346 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
5120-00-184-8631INTERCHANGEABLE
WRENCH,BOX
6299
5120-00-222-1596INTERCHANGEABLE
WRENCH,BOX
CX1820
5120-00-222-1597INTERCHANGEABLE
WRENCH,BOX
8212484
5120-00-277-2682INTERCHANGEABLE
WRENCH,BOX
5120-01-367-3315INTERCHANGEABLE
WRENCH,BOX
CX1416
5120-01-378-5767INTERCHANGEABLE
WRENCH,BOX
CX2024
5120-01-378-6296INTERCHANGEABLE
WRENCH,BOX
CX2830
5120-01-378-6471INTERCHANGEABLE
WRENCH,BOX
CX2226
5120-01-399-8876INTERCHANGEABLE
WRENCH,BOX
5120-01-601-5163INTERCHANGEABLE
WRENCH,BOX

Frequently Asked Questions

What is NSN 5120-01-651-4157?

NSN 5120-01-651-4157 is a Wrench,box, manufactured by S K Hand Tool Corp, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-651-4157?

NSN 5120-01-651-4157 has 2 cross-referenced part numbers: H1820 (S K Hand Tool Corp), A-A-1346 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 5120-01-651-4157?

There are 10 known substitutes for 5120-01-651-4157: 5120-00-184-8631, 5120-00-222-1596, 5120-00-222-1597 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H1820?

Key specifications for H1820: Overall Length: 5.870 INCHES NOMINAL IN; Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL; Surface Treatment: CHROMIUM OVERALL; Material: STEEL OVERALL. 7 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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