PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

57118Key,socket Head Screw

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-045-4886 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-045-4886 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-045-4886. Primary manufacturer part number: 57118.
Features
  • Key,socket Head Screw — FSC 5120
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 2.0 MILLIMETERS NOMINAL BOTH ENDS MM
  • Long Arm Length: 46.0 MILLIMETERS MINIMUM AND 50.0 MILLIMETERS MAXIMUM MM
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Features Provided: SHORT SERIES
  • Departure From Cited Document: AS MODIFIED BY SHORT ARM AND LONG ARM LENGTH
  • Specification/standard Data: 05047-ASME B18.3.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-01-045-4886, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Apex Tool Group, Llc Dba Nicholson. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-045-4886
Primary Part Number57118
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
MaterialSTEEL OVERALL
Wrenching Surface Size2.0 MILLIMETERS NOMINAL BOTH ENDS MM
Long Arm Length46.0 MILLIMETERS MINIMUM AND 50.0 MILLIMETERS MAXIMUM MM
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Features ProvidedSHORT SERIES
Departure From Cited DocumentAS MODIFIED BY SHORT ARM AND LONG ARM LENGTH
Specification/standard Data05047-ASME B18.3.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorL-HANDLE
Surface TreatmentOXIDE OVERALL
Short Arm Length14.0 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5210-00-255-7564T436.1XRL-5 INTERCHANGEABLE
Caliper,micrometer,outside
L.s. Starrett Company (the) Div Tool Division
5365-00-708-56944F6006 INTERCHANGEABLE
Shim
Caterpillar Inc Div Caterpillar Defense
4940-00-996-1566229340 INTERCHANGEABLE
Mixer,liquid,revolving Head
Prc-Desoto Intl Inc
5330-01-126-091768025 INTERCHANGEABLE
Gasket
Eaton Aerospace, Llc Dba Jackson South
6635-01-300-4588 INTERCHANGEABLE
Transformer,x-Ray Apparatus
5120-01-428-8499PR22A INTERCHANGEABLE
Pliers,retaining Ring
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-431-7081 INTERCHANGEABLE
Key,socket Head Screw
5120-01-542-7446 INTERCHANGEABLE
Pliers,retaining Ring
5305-01-665-3922 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
57118 Apex Tool Group, Llc Dba Nicholson (USA)
68025 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
57118 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
B18.3.2 The American Society of Mechanical Engineers (USA)
229340 Leica Geosystems Inc. (USA)
Related Parts
5210-00-255-7564INTERCHANGEABLE
CALIPER,MICROMETER,OUTSIDE
T436.1XRL-5
5365-00-708-5694INTERCHANGEABLE
SHIM
4F6006
4940-00-996-1566INTERCHANGEABLE
MIXER,LIQUID,REVOLVING HEAD
229340
5330-01-126-0917INTERCHANGEABLE
GASKET
68025
6635-01-300-4588INTERCHANGEABLE
TRANSFORMER,X-RAY APPARATUS
5120-01-428-8499INTERCHANGEABLE
PLIERS,RETAINING RING
PR22A
5120-01-431-7081INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5120-01-542-7446INTERCHANGEABLE
PLIERS,RETAINING RING
5305-01-665-3922INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5120-01-045-4886?

NSN 5120-01-045-4886 is a Key,socket Head Screw, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-045-4886?

NSN 5120-01-045-4886 has 5 cross-referenced part numbers: 57118 (Apex Tool Group, Llc Dba Nicholson), 68025 (Allen Mfg Co Sub of Chicago Pneumatic Tool Co), 57118 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), B18.3.2 (The American Society of Mechanical Engineers), 229340 (Leica Geosystems Inc.).

What NSN replaces 5120-01-045-4886?

There are 9 known substitutes for 5120-01-045-4886: 5210-00-255-7564, 5365-00-708-5694, 4940-00-996-1566 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 57118?

Key specifications for 57118: Material: STEEL OVERALL; Overall Length: 52.0 MILLIMETERS MAXIMUM MM; Wrenching Surface Size: 2.0 MILLIMETERS NOMINAL BOTH ENDS MM; Long Arm Length: 46.0 MILLIMETERS MINIMUM AND 50.0 MILLIMETERS MAXIMUM MM. 11 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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