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Technical Data Sheet
PartsTable / COMPONENT / NAS221-32
NAS221-32 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN, head_height: 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.361 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_length: 0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, screw_material: STEEL COMP 8630 OR STEEL COMP 4037. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-282-6686, 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
NAS221-32
NSN: 5305-00-282-6686
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_stylePAN
head_height0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.361 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_length0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
screw_materialSTEEL COMP 8630 OR STEEL COMP 4037
fastener_length2.016 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.190 INCHES IN
screw_surface_treatmentCADMIUM
NSN5305-00-282-6686
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NAS221-32 · 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: 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
•
SCREW MATERIAL: STEEL COMP 8630 OR STEEL COMP 4037
•
FASTENER LENGTH: 2.016 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
SCREW SURFACE TREATMENT: CADMIUM
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE
•
THREAD LENGTH: 0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN
SCREW MATERIALSTEEL COMP 8630 OR STEEL COMP 4037
FASTENER LENGTH2.016 INCHES MINIMUM AND 2.063 INCHES MAXIMUM IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
NOMINAL THREAD DIAMETER0.190 INCHES IN
SCREW SURFACE TREATMENTCADMIUM
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE
THREAD LENGTH0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
AS22132Interchangeable
interchangeable cross-reference
interchangeable
22132Interchangeable
interchangeable cross-reference
interchangeable
WW-P-471Interchangeable
interchangeable cross-reference
interchangeable
AA59616ACBBULInterchangeable
interchangeable cross-reference
interchangeable
A-A-59616Interchangeable
interchangeable cross-reference
interchangeable
2651-32Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS221-32?
NAS221-32 is a SCREW,MACHINE.
What parts can replace NAS221-32?
There are 10 known substitutes for NAS221-32: AS22132, 22132, WW-P-471 and 7 more. Substitute compatibility should be verified for your specific system.
Is NAS221-32 still available?
NAS221-32 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026