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Technical Data Sheet
PartsTable / COMPONENT / 20655
20655 ✓ Verified by PartsTable
Legrand · BOLT SCREW
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

Can be configured for use with:<br>- Half height hard drives<br>- Low profile hard drives<br>- Half height 5.25" drives<br>- 3.5" tape drives<br><br>- Plastic housing with metal internal frame<br>- Supplied front panels: 1 x blank plate, 1 x 5.25" CD/DVD Drive aperture, 1 x 3.5" Tape Drive aperture<br>- Front mounted power switch<br>- Stackable design - can be mounted vertically or horizontally<br>- SCSI ID address selector and SCSI termination switch<br>- Built-in cooling fan This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-0221, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
20655
NSN: 5305-00-012-0221
FSC: 5305
CAGE: 28839 — TELEDYNE INDUSTRIES INC TELEDYNE POWER SYSTEMS DIV (USA)
SPECIFICATIONS
length55.5 MILLIMETERS NOMINAL MM
materialCERAMIC ENCLOSURE
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
head_styleFILLISTER COUNTERSUNK
point_typeCONVENTIONAL
head_height0.051 INCHES NOMINAL IN
load_rating3.600 POUNDS MINIMUM AND 4.100 POUNDS MAXIMUM LBS
point_angle118.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
flute_length0.750 INCHES NOMINAL IN
thread_class2A A
coil_quantity13-1/2
NSN5305-00-012-0221
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20655 · Legrand ⚠ 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
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD STYLE: ROUND
•
HEAD HEIGHT: 0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM OR ZINC
•
THREAD QUANTITY PER INCH: 24
•
SCREW MATERIAL: STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.500 INCHES NOMINAL IN
INTERNAL DRIVE STYLESLOT
HEAD STYLEROUND
HEAD HEIGHT0.123 INCHES MINIMUM AND 0.137 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM OR ZINC
THREAD QUANTITY PER INCH24
SCREW MATERIALSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.190 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
PC68290-4Interchangeable
interchangeable cross-reference
interchangeable
3300P1-502Interchangeable
interchangeable cross-reference
interchangeable
503-S 57Interchangeable
interchangeable cross-reference
interchangeable
350-RTInterchangeable
interchangeable cross-reference
interchangeable
44127Interchangeable
interchangeable cross-reference
interchangeable
10511Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20655?
20655 is a SEMICONDUCTOR DEVICES,UNITIZED manufactured by Legrand.
What parts can replace 20655?
There are 20 known substitutes for 20655: PC68290-4, 3300P1-502, 503-S 57 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20655?
20655 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-0221. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026