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90316A538 — SCREW,ASSEMBLED WASHER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

90316A538: SCREW,ASSEMBLED WASHER.

The SCREW,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 18.8 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.240 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.375 INCHES NOMINAL IN, thread_length: 0.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-574-4451, 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
90316A538
NSN: 5305-01-574-4451
FSC: 5305 — Screws
CAGE: 97852 — STAR STAINLESS SCREW CO (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 18.8 OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.240 INCHES NOMINAL IN
thread_class2A A
head_diameter0.375 INCHES NOMINAL IN
thread_length0.625 INCHES NOMINAL IN
fastener_length0.625 INCHES NOMINAL IN
hardness_rating80.0 ROCKWELL B NOMINAL OVERALL
washer_quantity1
thread_directionRIGHT-HAND
internal_drive_styleSLOT
primary_washer_styleFLAT
NSN5305-01-574-4451
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 90316A538 · 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: 0.240 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
THREAD LENGTH: 0.625 INCHES NOMINAL IN
•
HARDNESS RATING: 80.0 ROCKWELL B NOMINAL OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: HEXAGON EXTENDED WASHER
•
PRIMARY WASHER STYLE: FLAT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.240 INCHES NOMINAL IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
THREAD LENGTH0.625 INCHES NOMINAL IN
HARDNESS RATING80.0 ROCKWELL B NOMINAL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON EXTENDED WASHER
PRIMARY WASHER STYLEFLAT
THREAD DIRECTIONRIGHT-HAND
MINIMUM TENSILE STRENGTH72000 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLESLOT
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

No substitute or cross-reference records for this part.

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 90316A538?
90316A538 is a SCREW,ASSEMBLED WASHER.
What is the NSN for 90316A538?
90316A538 is cataloged in the U.S. Government catalog under NSN 5305-01-574-4451. 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.