PartsTable
Technical Data Sheet
664-255 ✓ Verified by PartsTable
· 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

The GROMMET,NONMETALLIC is a the manufacturer industrial component. Key specifications include depth: 6.500 INCHES NOMINAL IN, phase: SINGLE, width: 3.250 INCHES NOMINAL IN, height: 3.250 INCHES NOMINAL IN, current_type: AC, usage_design: MASTER. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-276-4239, 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
664-255
NSN: 5325-00-276-4239
FSC: 5325
CAGE: 93568 — HARSCO CORP BMY-COMBAT SYSTEMS DIV (USA)
SPECIFICATIONS
depth6.500 INCHES NOMINAL IN
phaseSINGLE
width3.250 INCHES NOMINAL IN
height3.250 INCHES NOMINAL IN
current_typeAC
usage_designMASTER
knob_quantity2
pointer_purposeDIRECTIONAL; PREDITERMINED COURSE
contact_quantity14
frequency_rating400.0 HERTZ NOMINAL
electrical_connection_quantity1
mounting_facility_type_and_quantity1 PANEL
NSN5325-00-276-4239
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 664-255 · OEM ⚠ 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
GROMMET CONSTRUCTION TYPE: SOLID
NONMETALLIC HARDNESS RATING: 55.0 MINIMUM SHORE DUROMETER A AND 65.0 MAXIMUM SHORE DUROMETER A
GROOVE WIDTH: 0.062 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER: 0.875 INCHES NOMINAL IN
HOLE DIAMETER: 0.375 INCHES NOMINAL IN
GROMMET STYLE: ROUND
FLANGE THICKNESS: 0.156 INCHES NOMINAL IN
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
GROMMET CONSTRUCTION TYPESOLID
NONMETALLIC HARDNESS RATING55.0 MINIMUM SHORE DUROMETER A AND 65.0 MAXIMUM SHORE DUROMETER A
GROOVE WIDTH0.062 INCHES NOMINAL IN
LARGE FLANGE OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
HOLE DIAMETER0.375 INCHES NOMINAL IN
GROMMET STYLEROUND
FLANGE THICKNESS0.156 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
GROOVE OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
OVERALL HEIGHT0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
664255Interchangeable
interchangeable cross-reference
interchangeable
R2441SNInterchangeable
interchangeable cross-reference
interchangeable
R2441SInterchangeable
interchangeable cross-reference
interchangeable
R26349Interchangeable
interchangeable cross-reference
interchangeable
61304Interchangeable
interchangeable cross-reference
interchangeable
6350-1XX 8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 664-255?
664-255 is a GROMMET,NONMETALLIC.
What parts can replace 664-255?
There are 8 known substitutes for 664-255: 664255, R2441SN, R2441S and 5 more. Substitute compatibility should be verified for your specific system.
Is 664-255 still available?
664-255 is currently cancelled.
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