PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

78-404Clamp,c

Armstrong Bros Tool Co · NSN 5120-01-434-9225 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-434-9225 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-434-9225. Primary manufacturer part number: 78-404.
Features
  • Clamp,c — FSC 5120
  • Jaw Nominal Opening: 4.000 INCHES IN
  • Throat Depth: 2.750 INCHES NOMINAL IN
  • Test Load Rating: 4100.0 POUNDS LBS
  • 4 verified cross-references
  • Primary manufacturer: Armstrong Bros Tool Co
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Clamp,c, cataloged under National Stock Number 5120-01-434-9225, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Bros Tool Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5120-01-434-9225
Primary Part Number78-404
Item NameClamp,c
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
Jaw Nominal Opening4.000 INCHES IN
Throat Depth2.750 INCHES NOMINAL IN
Test Load Rating4100.0 POUNDS LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5120-00-180-090842404 INTERCHANGEABLE
Clamp,c
The Council Tool Company
4720-00-277-8975B704 INTERCHANGEABLE
Hose,nonmetallic
Carlisle Power Transmission Products Inc
9640-01-032-46516000002 INTERCHANGEABLE
Tube Round,iron
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
3455-01-045-794116220 INTERCHANGEABLE
Cutter,milling,end
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
4820-01-138-2021C404 INTERCHANGEABLE
Stem,fluid Valve
Hunt Valve Company, Inc.
2540-01-163-862478404 INTERCHANGEABLE
Ventilator,air Circulating
Bergstrom Inc
4730-01-276-69455520K14 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Mcmaster-Carr Supply Co
4730-01-367-993678404 INTERCHANGEABLE
Adapter,straight,pipe to Tube
DP Manufacturing Inc.
5910-01-371-3441 INTERCHANGEABLE
Capacitor,variable,mica Dielectr
Cross-Reference Index
Part NumberManufacturer
78-404 Armstrong Bros Tool Co (USA)
78-404 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
78-404 Apex Tool Group, Llc Dba Nicholson (USA)
C404 Gray Hand Tool Sales Ltd (CAN)
Related Parts
5120-00-180-0908INTERCHANGEABLE
CLAMP,C
42404
4720-00-277-8975INTERCHANGEABLE
HOSE,NONMETALLIC
B704
9640-01-032-4651INTERCHANGEABLE
TUBE ROUND,IRON
6000002
3455-01-045-7941INTERCHANGEABLE
CUTTER,MILLING,END
16220
4820-01-138-2021INTERCHANGEABLE
STEM,FLUID VALVE
C404
2540-01-163-8624INTERCHANGEABLE
VENTILATOR,AIR CIRCULATING
78404
4730-01-276-6945INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
5520K14
4730-01-367-9936INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
78404
5910-01-371-3441INTERCHANGEABLE
CAPACITOR,VARIABLE,MICA DIELECTR

Frequently Asked Questions

What is NSN 5120-01-434-9225?

NSN 5120-01-434-9225 is a Clamp,c, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-434-9225?

NSN 5120-01-434-9225 has 4 cross-referenced part numbers: 78-404 (Armstrong Bros Tool Co), 78-404 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 78-404 (Apex Tool Group, Llc Dba Nicholson), C404 (Gray Hand Tool Sales Ltd).

What NSN replaces 5120-01-434-9225?

There are 9 known substitutes for 5120-01-434-9225: 5120-00-180-0908, 4720-00-277-8975, 9640-01-032-4651 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 78-404?

Key specifications for 78-404: Special Features: SLIDING PIN SCREW; 3/4 IN. SCREW DIA IN; Jaw Nominal Opening: 4.000 INCHES IN; Throat Depth: 2.750 INCHES NOMINAL IN; Test Load Rating: 4100.0 POUNDS LBS. 4 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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