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Technical Data Sheet
PartsTable / COMPONENT / 20506-2
20506-2 ✓ 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

INSERTER AND REMOVER,BEARING AND. Key specifications include part_name_assigned_by_controlling_agency: INSTALLER, DIFFERENTIAL BEARING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-151-2944, 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
20506-2
NSN: 5305-00-151-2944
FSC: 5305
CAGE: 83298 — ALLIED SIGNAL INC AEROSPACE EQUIPMENT SYSTEMS EATONTOWN SITE (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyINSTALLER, DIFFERENTIAL BEARING
NSN5305-00-151-2944
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20506-2 · 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 QUANTITY PER INCH: 32
•
THREAD CLASS: 2A A
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW SURFACE TREATMENT: CADMIUM
•
THREAD LENGTH: 0.563 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
THREAD CLASS2A A
THREAD DIRECTIONRIGHT-HAND
SCREW SURFACE TREATMENTCADMIUM
THREAD LENGTH0.563 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
HEAD DIAMETER0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW MATERIALSTEEL
FASTENER LENGTH0.563 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
T-244-MInterchangeable
interchangeable cross-reference
interchangeable
72-700476-1Interchangeable
interchangeable cross-reference
interchangeable
MS35431-3Interchangeable
interchangeable cross-reference
interchangeable
9-660-1-1-2Interchangeable
interchangeable cross-reference
interchangeable
TC1-1/2SPUDInterchangeable
interchangeable cross-reference
interchangeable
901B002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20506-2?
20506-2 is a INSERTER AND REMOVER,BEARING AND manufactured by Hama.
What parts can replace 20506-2?
There are 29 known substitutes for 20506-2: T-244-M, 72-700476-1, MS35431-3 and 26 more. Substitute compatibility should be verified for your specific system.
Is 20506-2 still available?
20506-2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026