PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

666-3Gage Stock,thickness

L.s. Starrett Company (the) Div Tool Division · NSN 5210-00-277-1621 · FSC 5210 · No Item Name Available
Verified by PartsTable
NSN 5210-00-277-1621 — this item is cataloged by the U.S. Government under National Stock Number 5210-00-277-1621. Primary manufacturer part number: 666-3.
Features
  • Gage Stock,thickness — FSC 5210
  • Case: PROVIDED
  • Interval Line/thickness Markings: INCLUDED
  • Width: 0.500 INCHES NOMINAL IN
  • Length: 25.000 FEET NOMINAL FT
  • Thickness: 0.0030 INCHES NOMINAL IN
  • 5 verified cross-references
  • Primary manufacturer: L.s. Starrett Company (the) Div Tool Division
Applications
  • Quality assurance and inspection
  • Precision measurement and calibration
  • Laboratory and test equipment
General Description

The Gage Stock,thickness, cataloged under National Stock Number 5210-00-277-1621, is classified within Federal Supply Class 5210 (No Item Name Available) of the Measuring Tools group. The primary manufacturer of record is L.s. Starrett Company (the) Div Tool Division. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN5210-00-277-1621
Primary Part Number666-3
Item NameGage Stock,thickness
FSC / FSG5210 / 52 — No Item Name Available
ManufacturerL.s. Starrett Company (the) Div Tool Division
StatusACTIVE
CasePROVIDED
Interval Line/thickness MarkingsINCLUDED
Width0.500 INCHES NOMINAL IN
Length25.000 FEET NOMINAL FT
Thickness0.0030 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1660-00-024-609752800 INTERCHANGEABLE
Dipstick Assembly
Honeywell International Inc. Div Aerospace - Torrance
5210-00-083-0288599-9642-10 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
3110-00-100-055125821 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5210-00-277-1613666-1 1/2 INTERCHANGEABLE
Gage Stock,thickness
L.s. Starrett Company (the) Div Tool Division
5210-00-277-1618599-9642-40 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5210-00-277-1619599-9642-50 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5210-00-277-1620599-9642-20 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5210-00-357-9434599-9642-60 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5210-00-357-9438599-9642-130 INTERCHANGEABLE
Gage Stock,thickness
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5210-00-357-9439666-15 INTERCHANGEABLE
Gage Stock,thickness
L.s. Starrett Company (the) Div Tool Division
Cross-Reference Index
Part NumberManufacturer
666-3 PRIMARY L.s. Starrett Company (the) Div Tool Division (USA)
52800 L.s. Starrett Company (the) Div Tool Division (USA)
599-9642-30 PRIMARY Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa (USA)
GGG-G-17 TY8CL4STB General Services Administration Federal Supply Service (USA)
GGG-G-17 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
1660-00-024-6097INTERCHANGEABLE
DIPSTICK ASSEMBLY
52800
5210-00-083-0288INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-10
3110-00-100-0551INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
25821
5210-00-277-1613INTERCHANGEABLE
GAGE STOCK,THICKNESS
666-1 1/2
5210-00-277-1618INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-40
5210-00-277-1619INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-50
5210-00-277-1620INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-20
5210-00-357-9434INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-60
5210-00-357-9438INTERCHANGEABLE
GAGE STOCK,THICKNESS
599-9642-130
5210-00-357-9439INTERCHANGEABLE
GAGE STOCK,THICKNESS
666-15
6125-00-407-1140INTERCHANGEABLE
MOTOR-GENERATOR
4720-00-857-1735INTERCHANGEABLE
HOSE,NONMETALLIC
124-3

Frequently Asked Questions

What is NSN 5210-00-277-1621?

NSN 5210-00-277-1621 is a Gage Stock,thickness, manufactured by L.s. Starrett Company (the) Div Tool Division, classified under FSC 5210 (No Item Name Available). Status: active.

What are the part numbers for NSN 5210-00-277-1621?

NSN 5210-00-277-1621 has 5 cross-referenced part numbers: 666-3 (L.s. Starrett Company (the) Div Tool Division), 52800 (L.s. Starrett Company (the) Div Tool Division), 599-9642-30 (Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa), GGG-G-17 TY8CL4STB (General Services Administration Federal Supply Service), GGG-G-17 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5210-00-277-1621?

There are 12 known substitutes for 5210-00-277-1621: 1660-00-024-6097, 5210-00-083-0288, 3110-00-100-0551 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 666-3?

Key specifications for 666-3: Case: PROVIDED; Interval Line/thickness Markings: INCLUDED; Width: 0.500 INCHES NOMINAL IN; Length: 25.000 FEET NOMINAL FT. 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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