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DPYS7900-4-A-2 — SCREW ASSEMBLY,PANEL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

DPYS7900-4-A-2: SCREW ASSEMBLY,PANEL.

The SCREW ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 FASTENER, head_style: FLAT COUNTERSUNK, thread_class: 2A2A, head_diameter: 0.231 INCHES MINIMUM AND 0.231 INCHES MINIMUM AND 0.323 INCHES MAXIMUM0.323 INCHES MAXIMUM IN, thread_length: 0.175 INCHES NOMINAL IN, fastener_length: 0.395 INCHES MINIMUM AND 0.395 INCHES MINIMUM AND 0.425 INCHES MAXIMUM0.425 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-237-9315, 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
DPYS7900-4-A-2
NSN: 5305-01-237-9315
FSC: 5305 — Screws
CAGE: 0HDW7 — HUCK INTERNATIONAL, INC. DIV HUCK PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 FASTENER
head_styleFLAT COUNTERSUNK
thread_class2A2A
head_diameter0.231 INCHES MINIMUM AND 0.231 INCHES MINIMUM AND 0.323 INCHES MAXIMUM0.323 INCHES MAXIMUM IN
thread_length0.175 INCHES NOMINAL IN
fastener_length0.395 INCHES MINIMUM AND 0.395 INCHES MINIMUM AND 0.425 INCHES MAXIMUM0.425 INCHES MAXIMUM IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentCADMIUM STAND-OFF
internal_drive_styleSLOT
nominal_thread_diameter0.112 INCHES0.112 INCHES IN
NSN5305-01-237-9315
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: DPYS7900-4-A-2 · 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
•
FASTENER LENGTH: 0.395 INCHES MINIMUM AND 0.395 INCHES MINIMUM AND 0.425 INCHES MAXIMUM0.425 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 1 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
•
MATERIAL ACCOMMODATED THICKNESS: 0.115 INCHES MINIMUM AND 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM0.125 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.175 INCHES NOMINAL IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6300 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.395 INCHES MINIMUM AND 0.395 INCHES MINIMUM AND 0.425 INCHES MAXIMUM0.425 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 1 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 1 CL 2 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFF
MATERIAL ACCOMMODATED THICKNESS0.115 INCHES MINIMUM AND 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM0.125 INCHES MAXIMUM IN
THREAD LENGTH0.175 INCHES NOMINAL IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6300 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
NOMINAL THREAD DIAMETER0.112 INCHES0.112 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
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

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 DPYS7900-4-A-2?
DPYS7900-4-A-2 is a SCREW ASSEMBLY,PANEL.
What is the NSN for DPYS7900-4-A-2?
DPYS7900-4-A-2 is cataloged in the U.S. Government catalog under NSN 5305-01-237-9315. 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.