PartsTable
Technical Data Sheet
Download PDF

21047785-101 — THUMBSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

21047785-101: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, head_style: KNURLED NO. 2, head_height: 0.190 INCHES NOMINAL IN, point_style: FLAT, thread_class: 2A A, head_diameter: 0.440 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-303-9647, 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
21047785-101
NSN: 5305-01-303-9647
FSC: 5305 — Screws
CAGE: 81395 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DBA BAE SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
head_styleKNURLED NO. 2
head_height0.190 INCHES NOMINAL IN
point_styleFLAT
thread_class2A A
head_diameter0.440 INCHES NOMINAL IN
thread_length0.410 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.720 INCHES NOMINAL IN
shoulder_length0.120 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.380 INCHES NOMINAL FIRST SHOULDER IN
NSN5305-01-303-9647
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 21047785-101 · 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: 0.190 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.720 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.120 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.380 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.410 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: KNURLED NO. 2
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.190 INCHES NOMINAL IN
FASTENER LENGTH0.720 INCHES NOMINAL IN
SHOULDER LENGTH0.120 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.380 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.410 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEKNURLED NO. 2
THREAD DIRECTIONRIGHT-HAND
POINT STYLEFLAT
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
Ready to buy 21047785-101?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 21047785-101?
21047785-101 is a THUMBSCREW.
What is the NSN for 21047785-101?
21047785-101 is cataloged in the U.S. Government catalog under NSN 5305-01-303-9647. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 21047785-101

✓ 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.