FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW
The WATCH GLASS SET is a FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC industrial component. Key specifications include NONDEFINITIVE SPEC/STD DATA: B TYPE, PART NAME ASSIGNED BY CONTROLLING AGENCY: WATCH GLASS SET SET OF 6 CIRCULAR SHAPE W/O LIP W/O HANDLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6640-00-273-7055, indicating validated use in U.S.
government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
DD-W-131
NSN:6640-00-273-7055 FSC:6640 CAGE:81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
SPECIAL FEATURES
SET OF 6; CONSISTS OF 2 EA OF 37.5,75,AND 100 MM DIA; W/O HANDLE; CIRCULAR SHAPE; W/O LIP; NOT MATCHED WEIGHT TYPE; COLORLESS MM
NONDEFINITIVE SPEC/STD DATA
B TYPE
PART NAME ASSIGNED BY CONTROLLING AGENCY
WATCH GLASS SET SET OF 6 CIRCULAR SHAPE W/O LIP W/O HANDLE
NSN
6640-00-273-7055
COMPONENT DIAGRAM
KEY FEATURES
•
CONVEX SIDE RIBBED FEATURE: NOT PROVIDED
•
OVERALL DIAMETER: 73.000 MILLIMETERS MINIMUM AND 77.000 MILLIMETERS MAXIMUM MM
•
SHAPE: CIRCULAR
•
LINEAR EXPANSION COEFFICIENT PER DEG CELSIUS: 0.0000033
•
LINEAR EXPANSION COEFFICIENT TEMP RANGE IN DEG CELSIUS: -0.1 TO 300.0
TECHNICAL CHARACTERISTICS (FLIS)
CONVEX SIDE RIBBED FEATURE
NOT PROVIDED
OVERALL DIAMETER
73.000 MILLIMETERS MINIMUM AND 77.000 MILLIMETERS MAXIMUM MM
SHAPE
CIRCULAR
PART NAME ASSIGNED BY CONTROLLING AGENCY
CLASZ75MM
LINEAR EXPANSION COEFFICIENT PER DEG CELSIUS
0.0000033
LINEAR EXPANSION COEFFICIENT TEMP RANGE IN DEG CELSIUS
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FREQUENTLY ASKED QUESTIONS
What is DD-W-131?
DD-W-131 is a WATCH GLASS SET manufactured by FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC.
What parts can replace DD-W-131?
There are 25 known substitutes for DD-W-131: D15-646MPC462, D15-790TPC462, D15-790CPC462 and 22 more. Substitute compatibility should be verified for your specific system.
Is DD-W-131 still available?
DD-W-131 is currently cancelled.
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