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Technical Data Sheet
PartsTable / COMPONENT / 56504-4
56504-4 ✓ 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 SWITCH,LOCK is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, groove_width: 0.188 INCHES NOMINAL IN, grommet_style: ROUND, hole_diameter: 0.188 INCHES NOMINAL IN, overall_height: 0.312 INCHES NOMINAL IN, flange_thickness: 0.062 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 5325-00-754-1072, 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
56504-4
NSN: 5325-00-754-1072
FSC: 5325
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
groove_width0.188 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.188 INCHES NOMINAL IN
overall_height0.312 INCHES NOMINAL IN
flange_thickness0.062 INCHES NOMINAL IN
features_providedOIL RESISTANT AND COOLANT RESISTANT
groove_outside_diameter0.562 INCHES NOMINAL IN
grommet_construction_typeSOLID
nonmetallic_hardness_rating45.0 MINIMUM SHORE DUROMETER A AND 55.0 MAXIMUM SHORE DUROMETER A
large_flange_outside_diameter0.750 INCHES NOMINAL IN
NSN5325-00-754-1072
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 56504-4 · 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 WIDTH: 0.188 INCHES NOMINAL IN
•
GROOVE OUTSIDE DIAMETER: 0.562 INCHES NOMINAL IN
•
FEATURES PROVIDED: OIL RESISTANT AND COOLANT RESISTANT
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
GROMMET STYLE: ROUND
•
LARGE FLANGE OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.062 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
GROOVE WIDTH0.188 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER0.562 INCHES NOMINAL IN
FEATURES PROVIDEDOIL RESISTANT AND COOLANT RESISTANT
MATERIALRUBBER SYNTHETIC OVERALL
GROMMET STYLEROUND
LARGE FLANGE OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
FLANGE THICKNESS0.062 INCHES NOMINAL IN
HOLE DIAMETER0.188 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
OVERALL HEIGHT0.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
8306921Interchangeable
interchangeable cross-reference
interchangeable
Z221Interchangeable
interchangeable cross-reference
interchangeable
D58808-1-20Interchangeable
interchangeable cross-reference
interchangeable
565044Interchangeable
interchangeable cross-reference
interchangeable
MS35489-138Interchangeable
Same NIIN cross-reference
interchangeable
MS35490-51Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56504-4?
56504-4 is a SWITCH,LOCK.
What parts can replace 56504-4?
There are 6 known substitutes for 56504-4: 8306921, Z221, D58808-1-20 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 56504-4?
56504-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-754-1072. 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