#4-40 18-8 Stainless Steel Flat Head Socket Cap Screws — 82° Countersunk — Fully Threaded
SKU: FN-SS-FHS-440-FULLTHD· 7 lengths
Bulk-Only Item
Minimum order quantity: 2,500 pieces per pack. Ships 7 business days after your cart reaches the $500 bulk minimum — bulk-only and regularly-stocked items both count. Learn more →
$0.03/ea
1 pack × 2,500 = 2,500 pieces
#4-40 18-8 stainless steel flat head socket cap screws (Allen head), 82° countersunk, fully threaded, ASME B18.3. Corrosion-resistant 18-8 (A2-70) stainless with a flush 82° flat countersunk head and 1/16" hex socket drive. Fully Threaded across all lengths in this listing (3/16" to 3/4"). These lengths are threaded the full length of the shank. Length is measured overall (head included), per countersunk convention. Sold in production-volume bulk packs.
Material
Stainless Steel
Finish
Plain / Natural
Grade
18-8 (A2-70)
Size
#4-40
Drive Type
Hex Socket
Head Style
flat
Standard
ASME B18.3
Guides: What does 1/4-20 mean? · 18-8 stainless steel vs. other grades
Technical Specifications
Order any length — 7 in this family
Type the packs you need and press Add; sort any column.
| Head Style | Head Dia. | Head Ht. | Threading | Drive | Packs | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 18-8 Stainless Steel | ||||||||||
| #4-4018-8 Stainless Steel Flat Head Socket Cap Screws — 82° Countersunk — Fully Threaded | ||||||||||
| 3/16" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 2,500 | FN-SS-FHS-440-0.1875-SS18-CS-FT-HEX-PL | $69.75$0.03/eapack of 2,500 · $0.03 ea | ||
| 1/4" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 2,500 | FN-SS-FHS-440-0.25-SS18-CS-FT-HEX-PL | $54.50$0.02/eapack of 2,500 · $0.02 ea | ||
| 5/16" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 2,500 | FN-SS-FHS-440-0.3125-SS18-CS-FT-HEX-PL | $52.20$0.02/eapack of 2,500 · $0.02 ea | ||
| 3/8" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 2,500 | FN-SS-FHS-440-0.375-SS18-CS-FT-HEX-PL | $41.75$0.02/eapack of 2,500 · $0.02 ea | ||
| 1/2" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 2,500 | FN-SS-FHS-440-0.5-SS18-CS-FT-HEX-PL | $56.45$0.02/eapack of 2,500 · $0.02 ea | ||
| 5/8" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 1,000 | FN-SS-FHS-440-0.625-SS18-CS-FT-HEX-PL | $20.00$0.02/eapack of 1,000 · $0.02 ea | ||
| 3/4" | Flat / Countersunk | 0.255 in | 0.083 in | Fully threaded | Hex Socket | 1,000 | FN-SS-FHS-440-0.75-SS18-CS-FT-HEX-PL | $20.08$0.02/eapack of 1,000 · $0.02 ea | ||
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These items count toward the $500 bulk minimum. Mix-and-match to reach it.
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