PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

681KCaliper,micrometer,inside

Cooper Industries Inc Lufkin/cooper Tools Div · NSN 5210-00-555-1045 · FSC 5210 · No Item Name Available
Verified by PartsTable
NSN 5210-00-555-1045 — this item is cataloged by the U.S. Government under National Stock Number 5210-00-555-1045. Primary manufacturer part number: 681K.
Features
  • Caliper,micrometer,inside — FSC 5210
  • Nondefinitive Spec/std Data: II TYPE AND A STYLE AND 3 CLASS
  • Design Type: TUBULAR
  • Graduation Unit: THOUSANDTHS OF AN INCH
  • Gaging Range: +4.000 TO 40.000 INCHES IN
  • 4 verified cross-references
  • Primary manufacturer: Cooper Industries Inc Lufkin/cooper Tools Div
Applications
  • Quality assurance and inspection
  • Precision measurement and calibration
  • Laboratory and test equipment
General Description

The Caliper,micrometer,inside, cataloged under National Stock Number 5210-00-555-1045, is classified within Federal Supply Class 5210 (No Item Name Available) of the Measuring Tools group. The primary manufacturer of record is Cooper Industries Inc Lufkin/cooper Tools Div. Government technical data includes 4 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5210-00-555-1045
Primary Part Number681K
Item NameCaliper,micrometer,inside
FSC / FSG5210 / 52 — No Item Name Available
ManufacturerCooper Industries Inc Lufkin/cooper Tools Div
StatusACTIVE
Nondefinitive Spec/std DataII TYPE AND A STYLE AND 3 CLASS
Design TypeTUBULAR
Graduation UnitTHOUSANDTHS OF AN INCH
Gaging Range+4.000 TO 40.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5210-00-288-7890 INTERCHANGEABLE
Caliper,micrometer,inside
5210-00-293-3523823AZ INTERCHANGEABLE
Caliper,micrometer,inside
L.s. Starrett Company (the) Div Tool Division
5210-00-543-3846 INTERCHANGEABLE
Caliper,micrometer,inside
5210-00-555-1046823DZ INTERCHANGEABLE
Caliper,micrometer,inside
L.s. Starrett Company (the) Div Tool Division
5210-00-619-3647 INTERCHANGEABLE
Caliper,micrometer,inside
5210-01-088-0091 INTERCHANGEABLE
Caliper,micrometer,inside
Cross-Reference Index
Part NumberManufacturer
681K Cooper Industries Inc Lufkin/cooper Tools Div (USA)
GGG-C-105 TY2CL3STA General Services Administration Federal Supply Service (USA)
681K Apex Tool Group, Llc (USA)
GGG-C-105 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5210-00-288-7890INTERCHANGEABLE
CALIPER,MICROMETER,INSIDE
5210-00-293-3523INTERCHANGEABLE
CALIPER,MICROMETER,INSIDE
823AZ
5210-00-543-3846INTERCHANGEABLE
CALIPER,MICROMETER,INSIDE
5210-00-555-1046INTERCHANGEABLE
CALIPER,MICROMETER,INSIDE
823DZ
5210-00-619-3647INTERCHANGEABLE
CALIPER,MICROMETER,INSIDE
5210-01-088-0091INTERCHANGEABLE
CALIPER,MICROMETER,INSIDE

Frequently Asked Questions

What is NSN 5210-00-555-1045?

NSN 5210-00-555-1045 is a Caliper,micrometer,inside, manufactured by Cooper Industries Inc Lufkin/cooper Tools Div, classified under FSC 5210 (No Item Name Available). Status: active.

What are the part numbers for NSN 5210-00-555-1045?

NSN 5210-00-555-1045 has 4 cross-referenced part numbers: 681K (Cooper Industries Inc Lufkin/cooper Tools Div), GGG-C-105 TY2CL3STA (General Services Administration Federal Supply Service), 681K (Apex Tool Group, Llc), GGG-C-105 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5210-00-555-1045?

There are 6 known substitutes for 5210-00-555-1045: 5210-00-288-7890, 5210-00-293-3523, 5210-00-543-3846 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 681K?

Key specifications for 681K: Nondefinitive Spec/std Data: II TYPE AND A STYLE AND 3 CLASS; Design Type: TUBULAR; Graduation Unit: THOUSANDTHS OF AN INCH; Gaging Range: +4.000 TO 40.000 INCHES IN. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com