PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25WContact Point,measuring Instrume

L.s. Starrett Company (the) Div Tool Division · NSN 5210-00-688-8491 · FSC 5210 · No Item Name Available
Verified by PartsTable
NSN 5210-00-688-8491 — this item is cataloged by the U.S. Government under National Stock Number 5210-00-688-8491. Primary manufacturer part number: 25W.
Features
  • Contact Point,measuring Instrume — FSC 5210
  • Thread Characteristics: 4-48 UNF
  • Material: STEEL CONTACT POINT
  • Point Length: 0.562 INCHES NOMINAL IN
  • Contact Point Style Designator: ROLLER
  • 2 verified cross-references
  • Primary manufacturer: L.s. Starrett Company (the) Div Tool Division
Applications
  • Applications requiring Steel Contact Point construction
General Description

The Contact Point,measuring Instrume, cataloged under National Stock Number 5210-00-688-8491, 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 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5210-00-688-8491
Primary Part Number25W
Item NameContact Point,measuring Instrume
FSC / FSG5210 / 52 — No Item Name Available
ManufacturerL.s. Starrett Company (the) Div Tool Division
StatusACTIVE
Thread Characteristics4-48 UNF
MaterialSTEEL CONTACT POINT
Point Length0.562 INCHES NOMINAL IN
Contact Point Style DesignatorROLLER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-114-203625W INTERCHANGEABLE
Gasket
Nyltite Corp of America
1610-00-119-688453916 INTERCHANGEABLE
Plate,cover
Hamilton Sundstrand Corporation Dba Collins Aerospace
4730-00-174-452812Z300PC51 INTERCHANGEABLE
Cup,oil,lubricating
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5905-00-502-4700 INTERCHANGEABLE
Resistor,variable,wire Wound,non
4921-01-197-980525W INTERCHANGEABLE
Coupler,quick Disco
Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division
5331-01-365-314853-916 INTERCHANGEABLE
O-Ring
Husco International Inc
5120-01-447-0230 INTERCHANGEABLE
Pliers,wire Twister
Cross-Reference Index
Part NumberManufacturer
25W PRIMARY L.s. Starrett Company (the) Div Tool Division (USA)
53916 L.s. Starrett Company (the) Div Tool Division (USA)
Related Parts
5330-00-114-2036INTERCHANGEABLE
GASKET
25W
1610-00-119-6884INTERCHANGEABLE
PLATE,COVER
53916
4730-00-174-4528INTERCHANGEABLE
CUP,OIL,LUBRICATING
12Z300PC51
5905-00-502-4700INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
4921-01-197-9805INTERCHANGEABLE
COUPLER,QUICK DISCO
25W
5331-01-365-3148INTERCHANGEABLE
O-RING
53-916
5120-01-447-0230INTERCHANGEABLE
PLIERS,WIRE TWISTER

Frequently Asked Questions

What is NSN 5210-00-688-8491?

NSN 5210-00-688-8491 is a Contact Point,measuring Instrume, 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 5210-00-688-8491?

NSN 5210-00-688-8491 has 2 cross-referenced part numbers: 25W (L.s. Starrett Company (the) Div Tool Division), 53916 (L.s. Starrett Company (the) Div Tool Division).

What NSN replaces 5210-00-688-8491?

There are 7 known substitutes for 5210-00-688-8491: 5330-00-114-2036, 1610-00-119-6884, 4730-00-174-4528 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25W?

Key specifications for 25W: Thread Characteristics: 4-48 UNF; Special Features: 3/8 IN. DIA ROLLER IN; Material: STEEL CONTACT POINT; Point Length: 0.562 INCHES NOMINAL 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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