PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70-920Mirror,inspection

Armstrong Bros Tool Co · NSN 5120-01-599-4539 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-599-4539 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-599-4539. Primary manufacturer part number: 70-920.
Features
  • Mirror,inspection — FSC 5120
  • Mirror Length: 2.000 INCHES NOMINAL IN
  • Retracted Length: 5.000 INCHES NOMINAL IN
  • Mirror Shape: OVAL
  • Features Provided: 360 DEGREE SWIVEL HEAD AND POCKET CLIP
  • Material: STEEL
  • Mirror Width: 1.000 INCHES NOMINAL IN
  • Extended Length: 17.000 INCHES IN
Applications
  • Applications requiring Steel construction
General Description

The Mirror,inspection, cataloged under National Stock Number 5120-01-599-4539, 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 8 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-599-4539
Primary Part Number70-920
Item NameMirror,inspection
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
Mirror Length2.000 INCHES NOMINAL IN
Retracted Length5.000 INCHES NOMINAL IN
Mirror ShapeOVAL
Features Provided360 DEGREE SWIVEL HEAD AND POCKET CLIP
MaterialSTEEL
Mirror Width1.000 INCHES NOMINAL IN
Extended Length17.000 INCHES IN
Unit TypeTELESCOPING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2520-00-774-376720816 INTERCHANGEABLE
Sleeve,tachometer D
Napco International Llc Dba Napco International Inc
5330-01-390-194470920 INTERCHANGEABLE
Gasket
Generac Corp
3110-01-428-703370920 INTERCHANGEABLE
Bearing,ball and Roller,radial a
Ingersoll-Rand Co Material Handling Div
Cross-Reference Index
Part NumberManufacturer
70-920 Armstrong Bros Tool Co (USA)
70-920 Apex Tool Group, Llc Dba Nicholson (USA)
70-920 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
456720001805 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
Related Parts
2520-00-774-3767INTERCHANGEABLE
SLEEVE,TACHOMETER D
20816
5330-01-390-1944INTERCHANGEABLE
GASKET
70920
3110-01-428-7033INTERCHANGEABLE
BEARING,BALL AND ROLLER,RADIAL A
70920

Frequently Asked Questions

What is NSN 5120-01-599-4539?

NSN 5120-01-599-4539 is a Mirror,inspection, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-599-4539?

NSN 5120-01-599-4539 has 4 cross-referenced part numbers: 70-920 (Armstrong Bros Tool Co), 70-920 (Apex Tool Group, Llc Dba Nicholson), 70-920 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 456720001805 (Ncb Hungary (honvedsegi Egyseges Termekkod)).

What NSN replaces 5120-01-599-4539?

There are 3 known substitutes for 5120-01-599-4539: 2520-00-774-3767, 5330-01-390-1944, 3110-01-428-7033. Verify interchangeability with system specifications before substitution.

What are the specifications of 70-920?

Key specifications for 70-920: Mirror Length: 2.000 INCHES NOMINAL IN; Retracted Length: 5.000 INCHES NOMINAL IN; Mirror Shape: OVAL; Features Provided: 360 DEGREE SWIVEL HEAD AND POCKET CLIP. 8 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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