PartsTable
Technical Data Sheet
4378 ✓ Verified by PartsTable
Hama · 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

PANEL,CONTROL,ELECTRICAL-ELECTRO. Key specifications include hole_type: DRILLED, head_style: HEXAGON, grip_length: 0.812 INCHES NOMINAL IN, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A, hole_diameter: 0.070 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 5306-00-206-4185, 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
4378
NSN: 5306-00-206-4185
FSC: 5306
CAGE: 94231 — THE CHAMPION COMPANY DIV GROUND SUPPORT EQUIPMENT (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length0.812 INCHES NOMINAL IN
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.070 INCHES NOMINAL IN
hole_quantity1
overall_depth3.25 INCHES NOMINAL IN
overall_width4.25 INCHES NOMINAL IN
thread_length0.641 INCHES MINIMUM IN
overall_height7.70 INCHES NOMINAL IN
NSN5306-00-206-4185
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4378 · Hama ⚠ 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 DIRECTION: RIGHT-HAND
HOLE TYPE: DRILLED
FASTENER LENGTH: 1.453 INCHES NOMINAL IN
HOLE QUANTITY: 1
HOLE DIAMETER: 0.070 INCHES NOMINAL IN
THREAD SERIES DESIGNATOR: UNF
THREAD LENGTH: 0.641 INCHES MINIMUM IN
HOLE CONFIGURATION STYLE: HEXAGON FLATS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
HOLE TYPEDRILLED
FASTENER LENGTH1.453 INCHES NOMINAL IN
HOLE QUANTITY1
HOLE DIAMETER0.070 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF
THREAD LENGTH0.641 INCHES MINIMUM IN
HOLE CONFIGURATION STYLEHEXAGON FLATS
THREAD CLASS3A A
NOMINAL THREAD DIAMETER0.375 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
PB3Upgraded Successor
successor cross-reference
successor
PB30Upgraded Successor
successor cross-reference
successor
4378Upgraded Successor
successor cross-reference
successor
416821-66DInterchangeable
interchangeable cross-reference
interchangeable
903203Interchangeable
interchangeable cross-reference
interchangeable
AS1937-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4378?
4378 is a PANEL,CONTROL,ELECTRICAL-ELECTRO manufactured by Hama.
What parts can replace 4378?
There are 12 known substitutes for 4378: PB3, PB30, 4378 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4378?
4378 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-206-4185. This indicates validated use in U.S. government and defense supply chains.
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