PartsTable
Technical Data Sheet
155303 ✓ 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: ROUND, head_height: 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN, thread_length: 1.667 INCHES MINIMUM IN, screw_material: STEEL COMP 1020. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-591-9444, 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
155303
NSN: 5305-00-591-9444
FSC: 5305
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
head_styleROUND
head_height0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
thread_length1.667 INCHES MINIMUM IN
screw_materialSTEEL COMP 1020
fastener_length1.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.216 INCHES IN
screw_surface_treatmentCADMIUM OR ZINC
thread_quantity_per_inch24
NSN5305-00-591-9444
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 155303 · 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
HEAD HEIGHT: 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
HEAD DIAMETER: 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER: 0.216 INCHES IN
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH: 1.750 INCHES NOMINAL IN
SCREW MATERIAL: STEEL COMP 1020
THREAD CLASS: 2A A
THREAD QUANTITY PER INCH: 24
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
HEAD DIAMETER0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.216 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH1.750 INCHES NOMINAL IN
SCREW MATERIALSTEEL COMP 1020
THREAD CLASS2A A
THREAD QUANTITY PER INCH24
SCREW SURFACE TREATMENTCADMIUM OR ZINC
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
133000Interchangeable
interchangeable cross-reference
interchangeable
123-0408-166 PIECE 26Interchangeable
interchangeable cross-reference
interchangeable
133000CPSInterchangeable
interchangeable cross-reference
interchangeable
133000-101Interchangeable
interchangeable cross-reference
interchangeable
123SCAV7521-1Interchangeable
interchangeable cross-reference
interchangeable
13618Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 155303?
155303 is a SCREW,MACHINE.
What parts can replace 155303?
There are 9 known substitutes for 155303: 133000, 123-0408-166 PIECE 26, 133000CPS and 6 more. Substitute compatibility should be verified for your specific system.
Is 155303 still available?
155303 is currently cancelled.
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