PartsTable
Technical Data Sheet

20574/201.7 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

20574/201.7: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT EXTENDED WASHER, head_height: 0.250 INCHES NOMINAL IN, head_diameter: 0.103 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN, thread_length: 0.410 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 0.410 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-150-6353, 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
20574/201.7
NSN: 5305-01-150-6353
FSC: 5305 — Screws
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
head_styleFLAT EXTENDED WASHER
head_height0.250 INCHES NOMINAL IN
head_diameter0.103 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
thread_length0.410 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.410 INCHES NOMINAL IN
special_featuresUNDERCUT HEAD; SLOT AT THREADED END,0.030 IN. W AND 0.030 IN. DP IN
thread_directionRIGHT-HAND
nominal_thread_diameter0.110 INCHES IN
extended_washer_diameter0.220 INCHES NOMINAL IN
thread_series_designatorBA
extended_washer_thickness0.030 INCHES NOMINAL IN
NSN5305-01-150-6353
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 20574/201.7 · 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
•
EXTENDED WASHER THICKNESS: 0.030 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.410 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: BS EN.56 AM ASSN STD SINGLE MATERIAL RESPONSE
•
EXTENDED WASHER DIAMETER: 0.220 INCHES NOMINAL IN
•
THREAD LENGTH: 0.410 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.110 INCHES IN
•
HEAD STYLE: FLAT EXTENDED WASHER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.030 INCHES NOMINAL IN
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH0.410 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONBS EN.56 AM ASSN STD SINGLE MATERIAL RESPONSE
EXTENDED WASHER DIAMETER0.220 INCHES NOMINAL IN
THREAD LENGTH0.410 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.110 INCHES IN
HEAD STYLEFLAT EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL CORROSION RESISTING
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 20574/201.7?
20574/201.7 is a SCREW,MACHINE.
What is the NSN for 20574/201.7?
20574/201.7 is cataloged in the U.S. Government catalog under NSN 5305-01-150-6353. 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.