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GS503A-SF8D — INSERT,PANEL FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GS503A-SF8D: INSERT,PANEL FASTENER.

The INSERT,PANEL FASTENER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hole_type: THREADED-COUNTERBOREDTHREADED-COUNTERBORED, insert_style: PROTRUDING FLANGEPROTRUDING FLANGE, body_diameter: 0.306 INCHES MINIMUM AND 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM0.312 INCHES MAXIMUM IN, flange_diameter: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN, flange_thickness: 0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM0.046 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-349-1002, 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
GS503A-SF8D
NSN: 5325-01-349-1002
FSC: 5325 — Fastening Devices
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hole_typeTHREADED-COUNTERBOREDTHREADED-COUNTERBORED
insert_stylePROTRUDING FLANGEPROTRUDING FLANGE
body_diameter0.306 INCHES MINIMUM AND 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM0.312 INCHES MAXIMUM IN
flange_diameter0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
flange_thickness0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM0.046 INCHES MAXIMUM IN
surface_treatmentCHROMATE OVERALL
material_document_and_classificationQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
thread_size_and_series/type_designator0.164-32 UNIFIED NATIONAL COARSE (UNC)
surface_treatment_document_and_classificationMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-349-1002
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GS503A-SF8D · 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 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY DIAMETER: 0.306 INCHES MINIMUM AND 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM0.312 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE OVERALL
•
INSERT STYLE: PROTRUDING FLANGEPROTRUDING FLANGE
•
MATERIAL: ALUMINUM ALLOY 2024 OVERALL
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.164-32 UNIFIED NATIONAL COARSE (UNC)
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 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
BODY DIAMETER0.306 INCHES MINIMUM AND 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM0.312 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE OVERALL
INSERT STYLEPROTRUDING FLANGEPROTRUDING FLANGE
MATERIALALUMINUM ALLOY 2024 OVERALL
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.164-32 UNIFIED NATIONAL COARSE (UNC)
HOLE TYPETHREADED-COUNTERBOREDTHREADED-COUNTERBORED
FLANGE THICKNESS0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM0.046 INCHES MAXIMUM IN
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

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 GS503A-SF8D?
GS503A-SF8D is a INSERT,PANEL FASTENER.
What is the NSN for GS503A-SF8D?
GS503A-SF8D is cataloged in the U.S. Government catalog under NSN 5325-01-349-1002. 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.