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P330-1679-020 — SCREW,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

P330-1679-020: SCREW,EXTERNALLY RELIEVED BODY.

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OR STEEL OVERALL, head_style: PAN, head_height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-433-3570, 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
P330-1679-020
NSN: 5305-00-433-3570
FSC: 5305 — Screws
CAGE: 77250 — ALLIED PRODUCTS CORP PHEOLL MFG CO DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OR STEEL OVERALL
head_stylePAN
head_height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
fastener_length0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
first_diameter_from_head0.116 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
NSN5305-00-433-3570
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: P330-1679-020 · 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: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 0.116 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: PAN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
FASTENER LENGTH0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD0.116 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEPAN
THREAD DIRECTIONRIGHT-HAND
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.280 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
330-1679-020Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P330-1679-020?
P330-1679-020 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace P330-1679-020?
There is 1 known substitute for P330-1679-020: 330-1679-020. Substitute compatibility should be verified for your specific system.
What is the NSN for P330-1679-020?
P330-1679-020 is cataloged in the U.S. Government catalog under NSN 5305-00-433-3570. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.