PartsTable
Technical Data Sheet
122-6669173 PC 20 ✓ 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, head_height: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN, thread_length: 0.875 INCHES NOMINAL IN, screw_material: STEEL COMP 316. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-448-3318, 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
122-6669173 PC 20
NSN: 5305-01-448-3318
FSC: 5305
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
head_stylePAN
head_height0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN
thread_length0.875 INCHES NOMINAL IN
screw_materialSTEEL COMP 316
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
screw_surface_treatmentPASSIVATE
thread_quantity_per_inch20
NSN5305-01-448-3318
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 122-6669173 PC 20 · 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
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
FASTENER LENGTH: 0.875 INCHES NOMINAL IN
THREAD DIRECTION: RIGHT-HAND
THREAD LENGTH: 0.875 INCHES NOMINAL IN
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED MY MATERIAL
HEAD HEIGHT: 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH: 20
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.250 INCHES IN
FASTENER LENGTH0.875 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.875 INCHES NOMINAL IN
DEPARTURE FROM CITED DOCUMENTAS MODIFIED MY MATERIAL
HEAD HEIGHT0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH20
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW SURFACE TREATMENTPASSIVATE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
330C889A4020D14Interchangeable
interchangeable cross-reference
interchangeable
5007-136Interchangeable
interchangeable cross-reference
interchangeable
1/4-20 X 7/8 HEXInterchangeable
interchangeable cross-reference
interchangeable
N54P21014Interchangeable
interchangeable cross-reference
interchangeable
AN526C420-14Interchangeable
interchangeable cross-reference
interchangeable
AN515C416-14Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 122-6669173 PC 20?
122-6669173 PC 20 is a SCREW,MACHINE.
What parts can replace 122-6669173 PC 20?
There are 14 known substitutes for 122-6669173 PC 20: 330C889A4020D14, 5007-136, 1/4-20 X 7/8 HEX and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 122-6669173 PC 20?
122-6669173 PC 20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-448-3318. This indicates validated use in U.S. government and defense supply chains.
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