PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20312Wrench,box and Open End,combinat

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-349-1440 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-349-1440 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-349-1440. Primary manufacturer part number: 20312.
Features
  • Wrench,box and Open End,combinat — FSC 5120
  • Material: STEEL OVERALL
  • Wrenching End Offset Angle: 15.0 DEGREES NOMINAL
  • Style Designator: OFFSET
  • Wrenching Surface Size: 12.0 MILLIMETERS NOMINAL BOTH ENDS MM
  • Head Angle: 15.0 DEGREES NOMINAL
  • Surface Treatment: CHROMIUM OVERALL
  • Specification/standard Data: 81343-SAE AS955 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box and Open End,combinat, cataloged under National Stock Number 5120-01-349-1440, 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 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-349-1440
Primary Part Number20312
Item NameWrench,box and Open End,combinat
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
MaterialSTEEL OVERALL
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Style DesignatorOFFSET
Wrenching Surface Size12.0 MILLIMETERS NOMINAL BOTH ENDS MM
Head Angle15.0 DEGREES NOMINAL
Surface TreatmentCHROMIUM OVERALL
Specification/standard Data81343-SAE AS955 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Shape12 POINT SECOND END INTERNAL
Nondefinitive Spec/std Data3 TYPE AND 1 CLASS AND B STYLE
Wrenching Surface ShapeOVAL FIRST END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-156-7549319696-553 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4730-00-202-953955-454-1 INTERCHANGEABLE
Reducer,tube
Dana Corp Spicer Transmission Div
5307-00-373-8749203-12 INTERCHANGEABLE
Stud,plain
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
4420-00-468-0045 INTERCHANGEABLE
Head,oil Cooler
6220-00-535-2788 INTERCHANGEABLE
Stop Light-Taillight,vehicular
4720-00-541-88592556-12 INTERCHANGEABLE
Hose,nonmetallic
Danfoss Power Solutions II, Llc
5920-00-879-2286F30A2S INTERCHANGEABLE
Fuseholder,block
Regal Beloit America, Inc
3040-00-998-032107556003259 INTERCHANGEABLE
Lever,manual Control
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-115-277406792064156 INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-193-62942031201M0570 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
20312 Apex Tool Group, Llc Dba Nicholson (USA)
ALN20312 Apex Tool Group, Llc Dba Nicholson (USA)
OEXM12B Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
AS955 Society of Automotive Engineers Inc (USA)
B107.6 TY1 General Services Administration Federal Supply Service (USA)
OEXM12 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
B107.6 The American Society of Mechanical Engineers (USA)
B107.100 The American Society of Mechanical Engineers (USA)
AS955 TY3CL1STB General Services Administration Federal Supply Service (USA)
AS955 Sae International Dba Sae International (USA)
Related Parts
3110-00-156-7549INTERCHANGEABLE
BEARING,BALL,ANNULAR
319696-553
4730-00-202-9539INTERCHANGEABLE
REDUCER,TUBE
55-454-1
5307-00-373-8749INTERCHANGEABLE
STUD,PLAIN
203-12
4420-00-468-0045INTERCHANGEABLE
HEAD,OIL COOLER
6220-00-535-2788INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
4720-00-541-8859INTERCHANGEABLE
HOSE,NONMETALLIC
2556-12
5920-00-879-2286INTERCHANGEABLE
FUSEHOLDER,BLOCK
F30A2S
3040-00-998-0321INTERCHANGEABLE
LEVER,MANUAL CONTROL
07556003259
4820-01-115-2774INTERCHANGEABLE
STEM,FLUID VALVE
06792064156
4820-01-193-6294INTERCHANGEABLE
VALVE,SAFETY RELIEF
2031201M0570
3110-01-246-7311INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
6530-01-317-8475INTERCHANGEABLE
PUMP FACE PLATE,IRRIGATOR,SURGIC
203-1-2

Frequently Asked Questions

What is NSN 5120-01-349-1440?

NSN 5120-01-349-1440 is a Wrench,box and Open End,combinat, 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 5120-01-349-1440?

NSN 5120-01-349-1440 has 10 cross-referenced part numbers: 20312 (Apex Tool Group, Llc Dba Nicholson), ALN20312 (Apex Tool Group, Llc Dba Nicholson), OEXM12B (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), AS955 (Society of Automotive Engineers Inc), B107.6 TY1 (General Services Administration Federal Supply Service) and 5 more.

What NSN replaces 5120-01-349-1440?

There are 12 known substitutes for 5120-01-349-1440: 3110-00-156-7549, 4730-00-202-9539, 5307-00-373-8749 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20312?

Key specifications for 20312: Material: STEEL OVERALL; Wrenching End Offset Angle: 15.0 DEGREES NOMINAL; Style Designator: OFFSET; Wrenching Surface Size: 12.0 MILLIMETERS NOMINAL BOTH ENDS 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