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GS501A-SD8B — INSERT,PANEL FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GS501A-SD8B: INSERT,PANEL FASTENER.

The INSERT,PANEL FASTENER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hole_type: PLAINPLAIN, insert_style: FLUSH FLANGEFLUSH FLANGE, body_diameter: 0.275 INCHES MINIMUM AND 0.275 INCHES MINIMUM AND 0.281 INCHES MAXIMUM0.281 INCHES MAXIMUM IN, hole_diameter: 0.166 INCHES MINIMUM AND 0.166 INCHES MINIMUM AND 0.172 INCHES MAXIMUM0.172 INCHES MAXIMUM IN, flange_diameter: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-293-6714, 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
GS501A-SD8B
NSN: 5325-01-293-6714
FSC: 5325 — Fastening Devices
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hole_typePLAINPLAIN
insert_styleFLUSH FLANGEFLUSH FLANGE
body_diameter0.275 INCHES MINIMUM AND 0.275 INCHES MINIMUM AND 0.281 INCHES MAXIMUM0.281 INCHES MAXIMUM IN
hole_diameter0.166 INCHES MINIMUM AND 0.166 INCHES MINIMUM AND 0.172 INCHES MAXIMUM0.172 INCHES MAXIMUM IN
flange_diameter0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
flange_thickness0.020 INCHES MINIMUM AND 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM0.026 INCHES MAXIMUM IN
special_features0.248 IN. LG0.248 IN. LG IN
features_providedGROMMETGROMMET
surface_treatmentCHROMATE OVERALL
material_document_and_classificationQQ-A-225/6,T4 OR T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-293-6714
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GS501A-SD8B · 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
•
FLANGE DIAMETER: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,T4 OR T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FEATURES PROVIDED: GROMMETGROMMET
•
HOLE DIAMETER: 0.166 INCHES MINIMUM AND 0.166 INCHES MINIMUM AND 0.172 INCHES MAXIMUM0.172 INCHES MAXIMUM IN
•
BODY DIAMETER: 0.275 INCHES MINIMUM AND 0.275 INCHES MINIMUM AND 0.281 INCHES MAXIMUM0.281 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 OR T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FEATURES PROVIDEDGROMMETGROMMET
HOLE DIAMETER0.166 INCHES MINIMUM AND 0.166 INCHES MINIMUM AND 0.172 INCHES MAXIMUM0.172 INCHES MAXIMUM IN
BODY DIAMETER0.275 INCHES MINIMUM AND 0.275 INCHES MINIMUM AND 0.281 INCHES MAXIMUM0.281 INCHES MAXIMUM IN
SPECIAL FEATURES0.248 IN. LG0.248 IN. LG IN
SURFACE TREATMENTCHROMATE OVERALL
INSERT STYLEFLUSH FLANGEFLUSH FLANGE
MATERIALALUMINUM ALLOY 2024 OVERALL
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
S102D8AL-04Reference 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 GS501A-SD8B?
GS501A-SD8B is a INSERT,PANEL FASTENER.
What parts can replace GS501A-SD8B?
There is 1 known substitute for GS501A-SD8B: S102D8AL-04. Substitute compatibility should be verified for your specific system.
What is the NSN for GS501A-SD8B?
GS501A-SD8B is cataloged in the U.S. Government catalog under NSN 5325-01-293-6714. 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.