On Friday 5/23 Fastener SuperStore will be closing at 5:00pm CT for the holiday weekend. Orders placed after 3pm CT will ship Tuesday 5/27. Happy Memorial Day!

SEMS Screws

SEMS Screws

SEMS Screws are available in stainless steel and steel with a variety of finishes. SEMS screws feature attached washers in the following style options: internal, external and split lockwashers; square cone washers; and double washers. Fastener SuperStore offers over 900 distinct size and style combinations in our SEMS screw selection, all of which can be quickly and easily located on our site. Descriptions and details are available on each part page and spec sheets are linked if you require additional information.

Showing 1-30 of 114 Results. Continue Filtering or Select a Part Below

Part No.Part DescriptionCarton QtyPrice
563737 2-56 x 1/4" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 3,000 $249.51
398897 2-56 x 1/4" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $358.30
563740 2-56 x 5/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 3,000 $256.56
398918 2-56 x 5/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $363.40
563751 2-56 x 3/8" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 2,500 $249.53
398935 2-56 x 3/8" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $373.40
563768 2-56 x 1/2" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 2,500 $257.57
498500 4-40 x 3/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $673.85
317742 4-40 x 3/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $336.70
392873 4-40 x 1/4" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $492.15
104069 4-40 x 1/4" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $328.90
604895 4-40 x 1/4" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / 18-8 Stainless Steel
Washer: 410 Stainless Steel 5,000 $521.80
605066 4-40 x 1/4" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / Steel / Zinc
 10,000 $401.90
392929 4-40 x 5/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $392.95
104748 4-40 x 5/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $387.50
604906 4-40 x 5/16" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / 18-8 Stainless Steel
Washer: 410 Stainless Steel 5,000 $535.00
605070 4-40 x 5/16" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / Steel / Zinc
 10,000 $414.40
392947 4-40 x 3/8" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $408.60
105413 4-40 x 3/8" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $406.90
604919 4-40 x 3/8" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / 18-8 Stainless Steel
Washer: 410 Stainless Steel 5,000 $551.25
605086 4-40 x 3/8" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / Steel / Zinc
 10,000 $421.30
498515 4-40 x 7/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $429.70
498419 4-40 x 7/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $402.50
498521 4-40 x 1/2" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $580.10
106348 4-40 x 1/2" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $418.60
604924 4-40 x 1/2" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / 18-8 Stainless Steel
Washer: 410 Stainless Steel 5,000 $583.20
605099 4-40 x 1/2" SEMS Screws / Square Cone Washer / Six-Lobe (Torx®) / Pan Head / Steel / Zinc
 10,000 $449.80
580437 4-40 x 9/16" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $500.50
501288 4-40 x 5/8" SEMS Screws / Square Cone Washer / Phillips / Pan Head / 18-8 Stainless Steel
 5,000 $497.90
498425 4-40 x 5/8" SEMS Screws / Square Cone Washer / Phillips / Pan Head / Steel / Zinc
 10,000 $461.60