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Technical Data Sheet
PartsTable / COMPONENT / 33321-226
33321-226 ✓ 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: BUTTON, head_height: 0.086 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.303 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN, thread_length: 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, screw_material: STEEL OR STEEL COMP 1010. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-144-3911, 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
33321-226
NSN: 5305-00-144-3911
FSC: 5305
CAGE: 53655 — AVOX SYSTEMS INC DBA AVOX SYSTEMS INC (USA)
SPECIFICATIONS
head_styleBUTTON
head_height0.086 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.303 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN
thread_length0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
screw_materialSTEEL OR STEEL COMP 1010
fastener_length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentCADMIUM
minimum_tensile_strength55000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch32
NSN5305-00-144-3911
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 33321-226 · 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: 0.086 INCHES MAXIMUM IN
•
HEAD STYLE: BUTTON
•
HEAD DIAMETER: 0.303 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN
•
SCREW MATERIAL: STEEL OR STEEL COMP 1010
•
FASTENER LENGTH: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.086 INCHES MAXIMUM IN
HEAD STYLEBUTTON
HEAD DIAMETER0.303 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN
SCREW MATERIALSTEEL OR STEEL COMP 1010
FASTENER LENGTH0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
THREAD QUANTITY PER INCH32
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER0.138 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
2002955Interchangeable
interchangeable cross-reference
interchangeable
10-91243-4Interchangeable
interchangeable cross-reference
interchangeable
F54Interchangeable
interchangeable cross-reference
interchangeable
0.13832UNC2ATY3STY7CInterchangeable
Same NIIN cross-reference
interchangeable
AN526-632R4Interchangeable
Same NIIN cross-reference
interchangeable
00-2469Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 33321-226?
33321-226 is a SCREW,MACHINE.
What parts can replace 33321-226?
There are 7 known substitutes for 33321-226: 2002955, 10-91243-4, F54 and 4 more. Substitute compatibility should be verified for your specific system.
Is 33321-226 still available?
33321-226 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