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GS553U08B3 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GS553U08B3: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: FLAT CHAMFER, head_height: 0.495 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.420 INCHES NOMINAL IN, thread_length: 0.313 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-438-8760, 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
GS553U08B3
NSN: 5305-00-438-8760
FSC: 5305 — Screws
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleFLAT CHAMFER
head_height0.495 INCHES NOMINAL IN
thread_class2A A
head_diameter0.420 INCHES NOMINAL IN
thread_length0.313 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.935 INCHES NOMINAL IN
shoulder_length0.385 INCHES NOMINAL FIRST SHOULDER IN
special_featuresKNURLED HEAD
thread_directionRIGHT-HAND
shoulder_diameter0.258 INCHES NOMINAL FIRST SHOULDER IN
NSN5305-00-438-8760
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GS553U08B3 · 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: 0.495 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.935 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.385 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.258 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.313 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.495 INCHES NOMINAL IN
FASTENER LENGTH0.935 INCHES NOMINAL IN
SHOULDER LENGTH0.385 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.258 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.313 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESKNURLED HEAD
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 4
135191-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
115738-214Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DRB7500-8B3Reference document
Same NSN cross-reference
Reference document — Secondary reference
DRBSS7500-8-B-3Reference 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 GS553U08B3?
GS553U08B3 is a SCREW,SHOULDER.
What parts can replace GS553U08B3?
There are 4 known substitutes for GS553U08B3: 135191-2, 115738-214, DRB7500-8B3 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GS553U08B3?
GS553U08B3 is cataloged in the U.S. Government catalog under NSN 5305-00-438-8760. 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.