PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33-665Rule,machinist's

Us Air Tool Co., Inc. · NSN 5210-01-491-9749 · FSC 5210 · No Item Name Available
Verified by PartsTable
NSN 5210-01-491-9749 — this item is cataloged by the U.S. Government under National Stock Number 5210-01-491-9749. Primary manufacturer part number: 33-665.
Features
  • Rule,machinist's — FSC 5210
  • Width: 0.500 INCHES NOMINAL IN
  • Reading Direction: RIGHT
  • Length: 6.000 INCHES IN
  • Material: STEEL
  • Edge Smallest Graduation Unit: 1/100 INCH AND 1/64 INCH AND 1/32 INCH AND 1/10 INCH IN
  • 1 verified cross-reference
  • Primary manufacturer: Us Air Tool Co., Inc.
Applications
  • Applications requiring Steel construction
General Description

The Rule,machinist's, cataloged under National Stock Number 5210-01-491-9749, is classified within Federal Supply Class 5210 (No Item Name Available) of the Measuring Tools group. The primary manufacturer of record is Us Air Tool Co., Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5210-01-491-9749
Primary Part Number33-665
Item NameRule,machinist's
FSC / FSG5210 / 52 — No Item Name Available
ManufacturerUs Air Tool Co., Inc.
StatusACTIVE
Width0.500 INCHES NOMINAL IN
Reading DirectionRIGHT
Length6.000 INCHES IN
MaterialSTEEL
Edge Smallest Graduation Unit1/100 INCH AND 1/64 INCH AND 1/32 INCH AND 1/10 INCH IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6150-00-139-056333665 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Aerocontrolex Group, Inc. Div Talley Actuators
5310-00-297-731910A1911644 INTERCHANGEABLE
Washer,flat
Fwd Seagrave Holdings Lp
5930-00-733-555533665 INTERCHANGEABLE
Switch,sensitive
Mitsubishi Caterpillar Forklift America, Inc
5970-01-486-411033665-1 INTERCHANGEABLE
Insulation Sleeving,electrical,s
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
33-665 PRIMARY Us Air Tool Co., Inc. (USA)
Related Parts
6150-00-139-0563INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
33665
5310-00-297-7319INTERCHANGEABLE
WASHER,FLAT
10A1911644
5930-00-733-5555INTERCHANGEABLE
SWITCH,SENSITIVE
33665
5970-01-486-4110INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL,S
33665-1

Frequently Asked Questions

What is NSN 5210-01-491-9749?

NSN 5210-01-491-9749 is a Rule,machinist's, manufactured by Us Air Tool Co., Inc., classified under FSC 5210 (No Item Name Available). Status: active.

What are the part numbers for NSN 5210-01-491-9749?

NSN 5210-01-491-9749 has 1 cross-referenced part number: 33-665 (Us Air Tool Co., Inc.).

What NSN replaces 5210-01-491-9749?

There are 4 known substitutes for 5210-01-491-9749: 6150-00-139-0563, 5310-00-297-7319, 5930-00-733-5555 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 33-665?

Key specifications for 33-665: Width: 0.500 INCHES NOMINAL IN; Special Features: INCLUDES PLASTIC CASE; Reading Direction: RIGHT; Length: 6.000 INCHES IN. 6 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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