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Technical Data Sheet
PartsTable / COMPONENT / N-20168
N-20168 ✓ 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 DIAPHRAGM,CHAMBER,BRAKE is a the manufacturer industrial component. Key specifications include material: RUBBER POLYISOPRENE NATURAL CLASS NR, groove_width: 0.250 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.812 INCHES NOMINAL IN, diaphragm_type: BEADED ANGULAR RECESSED, overall_height: 1.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-350-2842, 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
N-20168
NSN: 5325-00-350-2842
FSC: 5325
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialRUBBER POLYISOPRENE NATURAL CLASS NR
groove_width0.250 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.812 INCHES NOMINAL IN
diaphragm_typeBEADED ANGULAR RECESSED
overall_height1.250 INCHES NOMINAL IN
mounting_methodBEAD
flange_thickness0.125 INCHES NOMINAL IN
material_thickness0.130 INCHES NOMINAL IN
groove_outside_diameter1.125 INCHES NOMINAL IN
environmental_protectionOIL RESISTANT
overall_outside_diameter5.500 INCHES NOMINAL IN
NSN5325-00-350-2842
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: N-20168 · 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
•
GROOVE OUTSIDE DIAMETER: 1.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-3065,TY R,CL RN,GR 506 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-R-3065,TY R,CL RS,GR 506 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
NONMETALLIC HARDNESS RATING: 45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
GROMMET STYLE: ROUND
•
GROMMET CONSTRUCTION TYPE: SOLID
•
LARGE FLANGE OUTSIDE DIAMETER: 1.375 INCHES NOMINAL IN
•
MATERIAL: RUBBER NATURAL AND RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
GROOVE OUTSIDE DIAMETER1.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-3065,TY R,CL RN,GR 506 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-R-3065,TY R,CL RS,GR 506 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
NONMETALLIC HARDNESS RATING45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
FLANGE THICKNESS0.125 INCHES NOMINAL IN
GROMMET STYLEROUND
GROMMET CONSTRUCTION TYPESOLID
LARGE FLANGE OUTSIDE DIAMETER1.375 INCHES NOMINAL IN
MATERIALRUBBER NATURAL AND RUBBER SYNTHETIC OVERALL
GROOVE WIDTH0.250 INCHES NOMINAL IN
HOLE DIAMETER0.812 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
3835-21Interchangeable
interchangeable cross-reference
interchangeable
3107860Interchangeable
interchangeable cross-reference
interchangeable
440259Interchangeable
interchangeable cross-reference
interchangeable
AD17544Interchangeable
interchangeable cross-reference
interchangeable
E22-42Interchangeable
interchangeable cross-reference
interchangeable
G11-42Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N-20168?
N-20168 is a DIAPHRAGM,CHAMBER,BRAKE.
What parts can replace N-20168?
There are 10 known substitutes for N-20168: 3835-21, 3107860, 440259 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N-20168?
N-20168 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-350-2842. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026