PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12-845Crowfoot Attachment,socket Wrenc

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-503-8808 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-503-8808 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-503-8808. Primary manufacturer part number: 12-845.
Features
  • Crowfoot Attachment,socket Wrenc — FSC 5120
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN
  • Style Designator: FLARE NUT
  • Wrenching Surface Size: 1.438 INCHES NOMINAL SINGLE END IN
  • Surface Treatment: CHROMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Crowfoot Attachment,socket Wrenc, cataloged under National Stock Number 5120-01-503-8808, 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 8 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-503-8808
Primary Part Number12-845
Item NameCrowfoot Attachment,socket Wrenc
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
MaterialSTEEL OVERALL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Style DesignatorFLARE NUT
Wrenching Surface Size1.438 INCHES NOMINAL SINGLE END IN
Surface TreatmentCHROMIUM OVERALL
Head Thickness0.938 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6620-00-005-487912845 INTERCHANGEABLE
Indicator,pressure
Faria Beede Instruments, Inc. Dba Faria Beede Instruments Inc
9540-00-147-7721 INTERCHANGEABLE
Channel,structural
5961-01-026-119012845 INTERCHANGEABLE
Semiconductor Device Assembly
Dynamics Electronic Products Inc Div of Waugh Controls Corp
4730-01-219-640512845 INTERCHANGEABLE
Elbow,pipe
Dana Commercial Vehicle Products, Llc
Cross-Reference Index
Part NumberManufacturer
12-845 Apex Tool Group, Llc Dba Nicholson (USA)
12-845 Armstrong Bros Tool Co (USA)
12-845 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
6620-00-005-4879INTERCHANGEABLE
INDICATOR,PRESSURE
12845
9540-00-147-7721INTERCHANGEABLE
CHANNEL,STRUCTURAL
5961-01-026-1190INTERCHANGEABLE
SEMICONDUCTOR DEVICE ASSEMBLY
12845
4730-01-219-6405INTERCHANGEABLE
ELBOW,PIPE
12845

Frequently Asked Questions

What is NSN 5120-01-503-8808?

NSN 5120-01-503-8808 is a Crowfoot Attachment,socket Wrenc, 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 5120-01-503-8808?

NSN 5120-01-503-8808 has 3 cross-referenced part numbers: 12-845 (Apex Tool Group, Llc Dba Nicholson), 12-845 (Armstrong Bros Tool Co), 12-845 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-503-8808?

There are 4 known substitutes for 5120-01-503-8808: 6620-00-005-4879, 9540-00-147-7721, 5961-01-026-1190 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12-845?

Key specifications for 12-845: Overall Width: 2.000 INCHES NOMINAL IN; Material: STEEL OVERALL; Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL; Drive End Shape: SQUARE SINGLE END INTERNAL. 9 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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