PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P476Protractor,semicircular

Alvin and Co Inc · NSN 6675-00-291-9381 · FSC 6675 · No Item Name Available
Verified by PartsTable
NSN 6675-00-291-9381 — this item is cataloged by the U.S. Government under National Stock Number 6675-00-291-9381. Primary manufacturer part number: P476.
Features
  • Protractor,semicircular — FSC 6675
  • Material: PLASTIC
  • Nondefinitive Spec/std Data: 1 TYPE AND A CLASS AND 2 STYLE AND 6 SIZE AND P MATERIAL
  • Scale Calibration: 0 TO 90,90 TO 0,0 TO 90,90 TO 0,INNER EDGE 0 TO 360
  • Diameter: 6.000 INCHES IN
  • Graduation Unit: 0.500 DEGREES
  • 4 verified cross-references
  • Primary manufacturer: Alvin and Co Inc
Applications
  • Applications requiring Plastic construction
General Description

The Protractor,semicircular, cataloged under National Stock Number 6675-00-291-9381, is classified within Federal Supply Class 6675 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Alvin and Co Inc. Government technical data includes 5 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6675-00-291-9381
Primary Part NumberP476
Item NameProtractor,semicircular
FSC / FSG6675 / 66 — No Item Name Available
ManufacturerAlvin and Co Inc
StatusACTIVE
MaterialPLASTIC
Nondefinitive Spec/std Data1 TYPE AND A CLASS AND 2 STYLE AND 6 SIZE AND P MATERIAL
Scale Calibration0 TO 90,90 TO 0,0 TO 90,90 TO 0,INNER EDGE 0 TO 360
Diameter6.000 INCHES IN
Graduation Unit0.500 DEGREES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6675-00-183-6485 INTERCHANGEABLE
Protractor,semicircular
6675-00-183-6486 INTERCHANGEABLE
Protractor,semicircular
6675-00-222-2535 INTERCHANGEABLE
Protractor,semicircular
6675-00-222-2536 INTERCHANGEABLE
Protractor,circular
6675-00-514-3544P263 INTERCHANGEABLE
Protractor,circular
Alvin and Co Inc
6675-00-514-3545 INTERCHANGEABLE
Protractor,circular
6675-00-514-3547 INTERCHANGEABLE
Protractor,semicircular
6675-00-514-3548P466 INTERCHANGEABLE
Protractor,semicircular
Alvin and Co Inc
6675-00-514-5570 INTERCHANGEABLE
Protractor,semicircular
6675-00-641-3166 INTERCHANGEABLE
Protractor,semicircular
Cross-Reference Index
Part NumberManufacturer
GG-P-681 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-52300 TY1CLAST2SZ6MLP General Services Administration Federal Supply Service (USA)
A-A-52300 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
P476 PRIMARY Alvin and Co Inc (USA)
Related Parts
6675-00-183-6485INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
6675-00-183-6486INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
6675-00-222-2535INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
6675-00-222-2536INTERCHANGEABLE
PROTRACTOR,CIRCULAR
6675-00-514-3544INTERCHANGEABLE
PROTRACTOR,CIRCULAR
P263
6675-00-514-3545INTERCHANGEABLE
PROTRACTOR,CIRCULAR
6675-00-514-3547INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
6675-00-514-3548INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
P466
6675-00-514-5570INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
6675-00-641-3166INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR
2940-00-724-1393INTERCHANGEABLE
FILTER ELEMENT,FLUID
6437562
6675-00-768-9398INTERCHANGEABLE
PROTRACTOR,SEMICIRCULAR

Frequently Asked Questions

What is NSN 6675-00-291-9381?

NSN 6675-00-291-9381 is a Protractor,semicircular, manufactured by Alvin and Co Inc, classified under FSC 6675 (No Item Name Available). Status: active.

What are the part numbers for NSN 6675-00-291-9381?

NSN 6675-00-291-9381 has 4 cross-referenced part numbers: GG-P-681 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-52300 TY1CLAST2SZ6MLP (General Services Administration Federal Supply Service), A-A-52300 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), P476 (Alvin and Co Inc).

What NSN replaces 6675-00-291-9381?

There are 12 known substitutes for 6675-00-291-9381: 6675-00-183-6485, 6675-00-183-6486, 6675-00-222-2535 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P476?

Key specifications for P476: Material: PLASTIC; Nondefinitive Spec/std Data: 1 TYPE AND A CLASS AND 2 STYLE AND 6 SIZE AND P MATERIAL; Scale Calibration: 0 TO 90,90 TO 0,0 TO 90,90 TO 0,INNER EDGE 0 TO 360; Diameter: 6.000 INCHES IN. 5 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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