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NAS1990-04P7K — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

NAS1990-04P7K: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN, head_height: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, thread_length: 0.388 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN, screw_material: STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-059-0192, 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
NAS1990-04P7K
NSN: 5305-01-059-0192
FSC: 5305 — Screws
CAGE: 56357 — ND INDUSTRIES INC DIV EASTERN DIVISION (USA)
SPECIFICATIONS
head_stylePAN
head_height0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
thread_length0.388 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
screw_materialSTEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740
fastener_length0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
locking_featurePELLET OR STRIP
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
thread_surface_finish32.0 MICROINCHES
NSN5305-01-059-0192
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS1990-04P7K · 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: 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
•
BEARING SURFACE OF HEAD SURFACE FINISH: 32.0 MICROINCHES
•
LOCKING FEATURE MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3650 ASSN STD SINGLE MATERIAL RESPONSE
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
•
FASTENER LENGTH: 0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-8844 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6414 ASSN STD 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE
•
THREAD LENGTH: 0.388 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
BEARING SURFACE OF HEAD SURFACE FINISH32.0 MICROINCHES
LOCKING FEATURE MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3650 ASSN STD SINGLE MATERIAL RESPONSE
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
FASTENER LENGTH0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-8844 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6414 ASSN STD 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE
THREAD LENGTH0.388 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
LOCKING FEATURE MATERIALPLASTIC POLYCHLOROTRIFLUOROETHYLENE
NOMINAL THREAD DIAMETER0.112 INCHES IN
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 2
5305PL0783116Reference document
Same NSN cross-reference
Reference document — Informative reference only
NAS1190-04P7KSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 NAS1990-04P7K?
NAS1990-04P7K is a SCREW,MACHINE.
What parts can replace NAS1990-04P7K?
There are 2 known substitutes for NAS1990-04P7K: 5305PL0783116, NAS1190-04P7K. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS1990-04P7K?
NAS1990-04P7K is cataloged in the U.S. Government catalog under NSN 5305-01-059-0192. 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.