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72531-98C-9B — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

72531-98C-9B: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.079 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.490 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-262-9010, 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
72531-98C-9B
NSN: 5305-01-262-9010
FSC: 5305 — Screws
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.079 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.490 INCHES MINIMUM IN
fastener_length0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_across_flats0.0781 INCHES NOMINAL IN
internal_drive_styleHEXAGON
NSN5305-01-262-9010
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 72531-98C-9B · 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
•
WIDTH ACROSS FLATS: 0.0781 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.079 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.490 INCHES MINIMUM IN
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.0781 INCHES NOMINAL IN
HEAD HEIGHT0.079 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
FASTENER LENGTH0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.490 INCHES MINIMUM IN
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
PC91052-2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 72531-98C-9B?
72531-98C-9B is a SCREW,CAP,SOCKET HEAD.
What parts can replace 72531-98C-9B?
There is 1 known substitute for 72531-98C-9B: PC91052-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 72531-98C-9B?
72531-98C-9B is cataloged in the U.S. Government catalog under NSN 5305-01-262-9010. 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.