PartsTable
Technical Data Sheet
301551 ✓ 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 DISC,BRAKE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OVERALL, hole_diameter: 0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.460 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-226-4824, 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
301551
NSN: 5306-00-226-4824
FSC: 5306
CAGE: H0G87 — WIBA ZEVENAAR B.V. (NLD)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
hole_diameter0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.460 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
surface_treatmentPASSIVATE OVERALL
material_thickness0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
end_item_identificationMRAP RG-33; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS);5820-01-679-7243 RADIO SET, AN/VRC-135(V)1, HANDHELD, MANPACK AND SMALL FORM FIT (HMS) 2-CHANNEL LEADER RADIO
nondefinitive_spec/std_data1 TYPE AND A GRADE AND 1 STYLE AND 2 COMPOSITION
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35,TY 2 OR TY 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5306-00-226-4824
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 301551 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
FF-S-85Upgraded Successor
successor cross-reference
successor
MS51105-332Upgraded Successor
successor cross-reference
successor
100023Upgraded Successor
successor cross-reference
successor
355456SUpgraded Successor
successor cross-reference
successor
100125Upgraded Successor
successor cross-reference
successor
106327Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 301551?
301551 is a DISC,BRAKE.
What parts can replace 301551?
There are 21 known substitutes for 301551: FF-S-85, MS51105-332, 100023 and 18 more. Substitute compatibility should be verified for your specific system.
Is 301551 still available?
301551 is currently cancelled.
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