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720254-21 — SCREW ASSEMBLY,PANEL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

720254-21: SCREW ASSEMBLY,PANEL.

The SCREW ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OR STEEL COMP 8740 FASTENER, head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.231 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN, thread_length: 0.188 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN, fastener_length: 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-195-7952, 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
720254-21
NSN: 5305-01-195-7952
FSC: 5305 — Screws
CAGE: 05869 — RAYTHEON COMPANY DIV RMD STRATEGIC (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 OR STEEL COMP 8740 FASTENER
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.231 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
thread_length0.188 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN
fastener_length0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
hardness_rating34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM FASTENER
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentCADMIUM FASTENER
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
NSN5305-01-195-7952
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 720254-21 · 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: 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 1 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
•
MATERIAL ACCOMMODATED THICKNESS: 0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.188 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN
•
HARDNESS RATING: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM FASTENER
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 1 CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 1 CL 2 FED SPEC SINGLE TREATMENT RESPONSE STAND-OFF
MATERIAL ACCOMMODATED THICKNESS0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM IN
THREAD LENGTH0.188 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM FASTENER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE FASTENER
NOMINAL THREAD DIAMETER0.138 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.
5305-00-001-5016 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 4
DPY7900P-6-B-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
FT1850-6-2-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
S600P-06-22Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9361142Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 720254-21?
720254-21 is a SCREW ASSEMBLY,PANEL.
What parts can replace 720254-21?
There are 4 known substitutes for 720254-21: DPY7900P-6-B-2, FT1850-6-2-2, S600P-06-22 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 720254-21?
720254-21 is cataloged in the U.S. Government catalog under NSN 5305-01-195-7952. 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.