PartsTable
Technical Data Sheet
PartsTable / MRO / 21740
21740 ✓ Verified by PartsTable
Clementoni · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

CAPACITOR,FIXED,PLASTIC DIELECTR. Key specifications include color: RED LENS, material: GLASS LENS, head_style: HEXAGON, body_length: 0.250 INCHES NOMINAL IN, head_height: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN, flange_width: 0.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-1887, 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
MRO→ MRO_GENERAL→ 21740
NSN: 5305-00-012-1887
FSC: 5305
CAGE: 35510 — PRESTOLITE ELECTRIC INC (USA)
SPECIFICATIONS
colorRED LENS
materialGLASS LENS
head_styleHEXAGON
body_length0.250 INCHES NOMINAL IN
head_height0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
flange_width0.125 INCHES NOMINAL IN
thread_class2A A
body_diameter0.109 INCHES NOMINAL IN
terminal_typeWIRE LEAD
thread_length0.750 INCHES MAXIMUM IN
inclosure_typeENCAPSULATED
overall_height2.000 INCHES NOMINAL IN
NSN5305-00-012-1887
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21740 · Clementoni ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON
•
HARDNESS RATING: 80.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE FINISH: 63.0 MICROINCHES THREADS
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.750 INCHES NOMINAL IN
HEAD STYLEHEXAGON
HARDNESS RATING80.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM OVERALL
THREAD DIRECTIONRIGHT-HAND
SURFACE FINISH63.0 MICROINCHES THREADS
MATERIALSTEEL OVERALL
SURFACE FINISH125.0 MICROINCHES BEARING SURFACE OF HEAD
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD LENGTH0.750 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
1003050026Interchangeable
interchangeable cross-reference
interchangeable
912-3103-0769Interchangeable
interchangeable cross-reference
interchangeable
107-0401Interchangeable
interchangeable cross-reference
interchangeable
G3728Interchangeable
interchangeable cross-reference
interchangeable
1218-87Interchangeable
interchangeable cross-reference
interchangeable
1218-087-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21740?
21740 is a CAPACITOR,FIXED,PLASTIC DIELECTR manufactured by Clementoni. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21740?
There are 24 known substitutes for 21740: 1003050026, 912-3103-0769, 107-0401 and 21 more. Substitute compatibility should be verified for your specific system.
Is 21740 still available?
21740 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026