PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C42T-Square

Alvin and Co Inc · NSN 6675-00-183-6487 · FSC 6675 · No Item Name Available
Verified by PartsTable
NSN 6675-00-183-6487 — this item is cataloged by the U.S. Government under National Stock Number 6675-00-183-6487. Primary manufacturer part number: C42.
Features
  • T-Square — FSC 6675
  • Head Overall Length: 15.000 INCHES MAXIMUM IN
  • Blade Overall Length: 42.000 INCHES NOMINAL IN
  • Blade Overall Length: 42.000 INCHES NOMINAL IN
  • Head Overall Length: 15.000 INCHES MAXIMUM IN
  • Material: PLASTIC OR WOOD HEAD
  • Material: PLASTIC OR WOOD BLADE
  • Head Type: FIXED
Applications
  • Applications requiring Plastic or Wood Head construction
General Description

The T-Square, cataloged under National Stock Number 6675-00-183-6487, 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 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6675-00-183-6487
Primary Part NumberC42
Item NameT-Square
FSC / FSG6675 / 66 — No Item Name Available
ManufacturerAlvin and Co Inc
StatusCANCELLED
Head Overall Length15.000 INCHES MAXIMUM IN
Blade Overall Length42.000 INCHES NOMINAL IN
Blade Overall Length42.000 INCHES NOMINAL IN
Head Overall Length15.000 INCHES MAXIMUM IN
MaterialPLASTIC OR WOOD HEAD
MaterialPLASTIC OR WOOD BLADE
Head TypeFIXED
MaterialPLASTIC OR WOOD HEAD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-093-0509 INTERCHANGEABLE
Coil,radio Frequency
6675-00-190-5272C30 INTERCHANGEABLE
T-Square
Alvin and Co Inc
6675-00-190-5850130C-4 INTERCHANGEABLE
Triangle,drafting
Alvin and Co Inc
6675-00-190-5852 INTERCHANGEABLE
Triangle,drafting
6675-00-190-585331-2614 INTERCHANGEABLE
Triangle,drafting
Cantel Industries Inc Dba Charvoz
6675-00-190-58636675-00-190-5863 INTERCHANGEABLE
Triangle,drafting
General Services Administration Federal Supply Service
6675-00-190-5864SK450-12 INTERCHANGEABLE
Triangle,drafting
Alvin and Co Inc
6675-00-190-5866130C-8 INTERCHANGEABLE
Triangle,drafting
Alvin and Co Inc
6675-00-190-5867130F-10 INTERCHANGEABLE
Triangle,drafting
Alvin and Co Inc
5999-00-221-9043C42.0 INTERCHANGEABLE
Heater,thermal Release
Schneider Electric Usa, Inc.
Cross-Reference Index
Part NumberManufacturer
8068E Brown Arthur and Bro Inc (USA)
A-A-843 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GG-T-711 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
C42 PRIMARY Alvin and Co Inc (USA)
Related Parts
5950-00-093-0509INTERCHANGEABLE
COIL,RADIO FREQUENCY
6675-00-190-5272INTERCHANGEABLE
T-SQUARE
C30
6675-00-190-5850INTERCHANGEABLE
TRIANGLE,DRAFTING
130C-4
6675-00-190-5852INTERCHANGEABLE
TRIANGLE,DRAFTING
6675-00-190-5853INTERCHANGEABLE
TRIANGLE,DRAFTING
31-2614
6675-00-190-5863INTERCHANGEABLE
TRIANGLE,DRAFTING
6675-00-190-5863
6675-00-190-5864INTERCHANGEABLE
TRIANGLE,DRAFTING
SK450-12
6675-00-190-5866INTERCHANGEABLE
TRIANGLE,DRAFTING
130C-8
6675-00-190-5867INTERCHANGEABLE
TRIANGLE,DRAFTING
130F-10
5999-00-221-9043INTERCHANGEABLE
HEATER,THERMAL RELEASE
C42.0
3120-00-394-7307INTERCHANGEABLE
BEARING
C42
6810-00-492-5587INTERCHANGEABLE
CALCIUM

Frequently Asked Questions

What is NSN 6675-00-183-6487?

NSN 6675-00-183-6487 is a T-Square, manufactured by Alvin and Co Inc, classified under FSC 6675 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6675-00-183-6487?

NSN 6675-00-183-6487 has 4 cross-referenced part numbers: 8068E (Brown Arthur and Bro Inc), A-A-843 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GG-T-711 (Federal Specifications Promulgated by General Services Administration Washington DC), C42 (Alvin and Co Inc).

What NSN replaces 6675-00-183-6487?

There are 12 known substitutes for 6675-00-183-6487: 5950-00-093-0509, 6675-00-190-5272, 6675-00-190-5850 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C42?

Key specifications for C42: Head Overall Length: 15.000 INCHES MAXIMUM IN; Blade Overall Length: 42.000 INCHES NOMINAL IN; Special Features: HEAD WIDTH:2-1/2 INCHES; HEAD THICKNESS:3/8 INCH; BLADE WIDTH:2-3/4 INCHES; BLADE THICKNESS:1/8 INCH; OPAQUE BLADE IN; Blade Overall Length: 42.000 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6675-00-183-6487 still in active supply?

NSN 6675-00-183-6487 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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