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Technical Data Sheet
PartsTable / COMPONENT / AA55624-43
AA55624-43 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.157 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, screw_material: PLASTIC POLYHEXAMETHYLENE AMIDE.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-239-7858, 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
AA55624-43
NSN: 5305-00-239-7858
FSC: 5305
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.157 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
screw_materialPLASTIC POLYHEXAMETHYLENE AMIDE
fastener_length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-239-7858
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AA55624-43 · 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
•
SCREW MATERIAL: PLASTIC POLYHEXAMETHYLENE AMIDE
•
THREAD LENGTH: 0.157 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD HEIGHT: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 9S STYLE
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND
•
FASTENER LENGTH: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIALPLASTIC POLYHEXAMETHYLENE AMIDE
THREAD LENGTH0.157 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
INTERNAL DRIVE STYLESLOT
HEAD HEIGHT0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 9S STYLE
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD QUANTITY PER INCH32
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
SR-754Interchangeable
interchangeable cross-reference
interchangeable
2543Interchangeable
interchangeable cross-reference
interchangeable
6513Interchangeable
interchangeable cross-reference
interchangeable
9411019Interchangeable
interchangeable cross-reference
interchangeable
109462Interchangeable
interchangeable cross-reference
interchangeable
MS15003-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA55624-43?
AA55624-43 is a SCREW,MACHINE.
What parts can replace AA55624-43?
There are 25 known substitutes for AA55624-43: SR-754, 2543, 6513 and 22 more. Substitute compatibility should be verified for your specific system.
Is AA55624-43 still available?
AA55624-43 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