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Technical Data Sheet
PartsTable / COMPONENT / 73573-5-38C
73573-5-38C ✓ 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,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, thread_length: 1.125 INCHES MINIMUM 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 5305-01-038-4764, 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
73573-5-38C
NSN: 5305-01-038-4764
FSC: 5305
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL OVERALL
head_styleFLAT CHAMFER
head_height0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
thread_length1.125 INCHES MINIMUM IN
fastener_length2.460 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
hardness_rating80.0 ROCKWELL B MINIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5305-01-038-4764
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 73573-5-38C · 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
•
MINIMUM TENSILE STRENGTH: 80000 POUNDS PER SQUARE INCH LBS
•
WIDTH ACROSS FLATS: 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.460 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.125 INCHES MINIMUM IN
•
INTERNAL DRIVE STYLE: HEXAGON
•
HEAD STYLE: FLAT CHAMFER
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
WIDTH ACROSS FLATS0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
FASTENER LENGTH2.460 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
THREAD LENGTH1.125 INCHES MINIMUM IN
INTERNAL DRIVE STYLEHEXAGON
HEAD STYLEFLAT CHAMFER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL OVERALL
MINIMUM YIELD STRENGTH30000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
410571Interchangeable
interchangeable cross-reference
interchangeable
157-60Interchangeable
interchangeable cross-reference
interchangeable
AC8699BPK6253Interchangeable
interchangeable cross-reference
interchangeable
0207431 ITEM 2Interchangeable
interchangeable cross-reference
interchangeable
965811-537CInterchangeable
Same NIIN cross-reference
interchangeable
AOL4166-537Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 73573-5-38C?
73573-5-38C is a SCREW,CAP,SOCKET HEAD.
What parts can replace 73573-5-38C?
There are 7 known substitutes for 73573-5-38C: 410571, 157-60, AC8699BPK6253 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 73573-5-38C?
73573-5-38C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-038-4764. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026