PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

57133Key,socket Head Screw

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-045-4896 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-045-4896 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-045-4896. Primary manufacturer part number: 57133.
Features
  • Key,socket Head Screw — FSC 5120
  • Wrenching Surface Size: 12.0 MILLIMETERS NOMINAL BOTH ENDS MM
  • Short Arm Length: 43.0 MILLIMETERS MINIMUM AND 45.0 MILLIMETERS MAXIMUM MM
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Nondefinitive Spec/std Data: 1 TYPE
  • Surface Treatment: OXIDE OVERALL
  • Style Designator: L-HANDLE
  • 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 5120-01-045-4896, 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 7 commercial cross-references from 7 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
NSN5120-01-045-4896
Primary Part Number57133
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Wrenching Surface Size12.0 MILLIMETERS NOMINAL BOTH ENDS MM
Short Arm Length43.0 MILLIMETERS MINIMUM AND 45.0 MILLIMETERS MAXIMUM MM
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Nondefinitive Spec/std Data1 TYPE
Surface TreatmentOXIDE OVERALL
Style DesignatorL-HANDLE
Specification/standard Data05047-ASME B18.3.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MaterialSTEEL OVERALL
Features ProvidedSHORT SERIES
Long Arm Length119.0 MILLIMETERS MINIMUM AND 134.0 MILLIMETERS MAXIMUM MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5120-00-198-5402 INTERCHANGEABLE
Key,socket Head Screw
5905-00-228-0707 INTERCHANGEABLE
Resistor,fixed,wire Wound
4820-01-061-512424734 INTERCHANGEABLE
Stem,fluid Valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-105-571847024 INTERCHANGEABLE
Gland Follower,valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-106-175562401 INTERCHANGEABLE
Yoke,bushing
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4820-01-152-54440.5 2490SNOTXXX INTERCHANGEABLE
Valve,gate
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
4330-01-330-5020 INTERCHANGEABLE
Filter Element,fluid
3040-01-334-7521 INTERCHANGEABLE
Shaft,shouldered
4720-01-605-9388G638826-6 INTERCHANGEABLE
Hose,nonmetallic
Hydraflow
6515-01-622-954968065 INTERCHANGEABLE
Blade,laryngoscope
Welch Allyn, Inc.
Cross-Reference Index
Part NumberManufacturer
57133 Apex Tool Group, Llc Dba Nicholson (USA)
0198 4905 Blackwood J. Blackwood & Son Pty Ltd (AUS)
68065 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
11/155103 Ke Marine Inc Dba Ke Marine Inc (USA)
B18.3.2 The American Society of Mechanical Engineers (USA)
57133 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
3007532 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
Related Parts
5120-00-198-5402INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5905-00-228-0707INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
4820-01-061-5124INTERCHANGEABLE
STEM,FLUID VALVE
24734
4820-01-105-5718INTERCHANGEABLE
GLAND FOLLOWER,VALVE
47024
4820-01-106-1755INTERCHANGEABLE
YOKE,BUSHING
62401
4820-01-152-5444INTERCHANGEABLE
VALVE,GATE
0.5 2490SNOTXXX
4330-01-330-5020INTERCHANGEABLE
FILTER ELEMENT,FLUID
3040-01-334-7521INTERCHANGEABLE
SHAFT,SHOULDERED
4720-01-605-9388INTERCHANGEABLE
HOSE,NONMETALLIC
G638826-6
6515-01-622-9549INTERCHANGEABLE
BLADE,LARYNGOSCOPE
68065

Frequently Asked Questions

What is NSN 5120-01-045-4896?

NSN 5120-01-045-4896 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 5120-01-045-4896?

NSN 5120-01-045-4896 has 7 cross-referenced part numbers: 57133 (Apex Tool Group, Llc Dba Nicholson), 0198 4905 (Blackwood J. Blackwood & Son Pty Ltd), 68065 (Allen Mfg Co Sub of Chicago Pneumatic Tool Co), 11/155103 (Ke Marine Inc Dba Ke Marine Inc), B18.3.2 (The American Society of Mechanical Engineers) and 2 more.

What NSN replaces 5120-01-045-4896?

There are 10 known substitutes for 5120-01-045-4896: 5120-00-198-5402, 5905-00-228-0707, 4820-01-061-5124 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 57133?

Key specifications for 57133: Wrenching Surface Size: 12.0 MILLIMETERS NOMINAL BOTH ENDS MM; Short Arm Length: 43.0 MILLIMETERS MINIMUM AND 45.0 MILLIMETERS MAXIMUM MM; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL; Nondefinitive Spec/std Data: 1 TYPE. 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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