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Technical Data Sheet
PartsTable / COMPONENT / 183300PC21
183300PC21 ✓ 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: HEXAGON, head_height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.514 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 0.625 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 5305-00-272-1499, 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
183300PC21
NSN: 5305-00-272-1499
FSC: 5305
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
thread_class3A A
thread_length0.514 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
internal_drive_styleSLOT
nominal_thread_diameter0.312 INCHES IN
screw_surface_treatmentPASSIVATE
minimum_tensile_strength80000 POUNDS PER SQUARE INCH LBS
NSN5305-00-272-1499
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 183300PC21 · 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 STYLE: HEXAGON
•
INTERNAL DRIVE STYLE: SLOT
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
THREAD QUANTITY PER INCH: 18
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY THREAD CLASS
•
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
MINIMUM TENSILE STRENGTH: 80000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEHEXAGON
INTERNAL DRIVE STYLESLOT
SCREW MATERIALSTEEL CORROSION RESISTING
THREAD QUANTITY PER INCH18
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY THREAD CLASS
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
NOMINAL THREAD DIAMETER0.312 INCHES IN
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 10S STYLE
SCREW MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
3-4APC7Interchangeable
interchangeable cross-reference
interchangeable
3-4WPC7Interchangeable
interchangeable cross-reference
interchangeable
118-32ALT2PC4Interchangeable
interchangeable cross-reference
interchangeable
FFS85TYPE1STYLE10SInterchangeable
interchangeable cross-reference
interchangeable
280451PC28Interchangeable
interchangeable cross-reference
interchangeable
FF-S-92 TY I STY 10SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 183300PC21?
183300PC21 is a SCREW,MACHINE.
What parts can replace 183300PC21?
There are 13 known substitutes for 183300PC21: 3-4APC7, 3-4WPC7, 118-32ALT2PC4 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 183300PC21?
183300PC21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-272-1499. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026