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The lowest price for 4g (2.90mm) x 1/2" Countersunk Phillips (PH1) Self Tapping Screw A2-70 Stainless G304 ANSI B18.6.4 right now is $5.00 at Bolt & Nut Australia, compared across 3 retailers.
The all-time low was $5.00 on 24 Apr 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 12 May 2026.
4g (2.90mm) x 1/2" Countersunk Phillips (PH1) Self Tapping Screw A2-70 Stainless G304 ANSI B18.6.4
Last updated at 12/05/2026 11:35:12
4g (2.90mm) x 1/2" Countersunk Phillips (PH1) Self Tapping Screw A2-70 Stainless G304 ANSI B18.6.4
Next-day delivery $5
Hobsons - #4 x 1/2 304 Stainless Ansi B18.6.3 / A2 Self-Tapper Csk Phil | T04C04050 (Pack Of 200)
Delivery between 13–21 May $7.95
Qty 5 Countersunk Self Tapping 4g (2.9mm) X 1/2" 13mm Stainless Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Qty 10 Countersunk Self Tapping 4g (2.9mm) X 1/2" 13mm Stainless Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on ebay.com
wont rust and hence will last a long time near the beach. Main use is to replace the nails in some electrical / coax / misting tube clamps by removing the nail and drilling a 3mm hole. Then a cordless drill can drive them into a timber section that would otherwise bend, vibrate etc. with a hammer, due to no supporting structure immediately behind the area that you wish to secure the cable / tube etc.
originally posted on ebay.com
good
originally posted on ebay.com
quality at a good price
| Alternative Brands | Brighton Best | Inox World |
| Brand | Hobson Engineering |
| Class Grade | A2-70 G304 |
| Custom Label 0 | Screws|Self Tappers|Countersunk Head |
| Drive Type | Phillips |
4g (2.90mm) x 1/2" Countersunk Phillips (PH1) Self Tapping Screw A2-70 Stainless G304 ANSI B18.6.4
Next-day delivery $5
Hobsons - #4 x 1/2 304 Stainless Ansi B18.6.3 / A2 Self-Tapper Csk Phil | T04C04050 (Pack Of 200)
Delivery between 13–21 May $7.95
Qty 5 Countersunk Self Tapping 4g (2.9mm) X 1/2" 13mm Stainless Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Qty 10 Countersunk Self Tapping 4g (2.9mm) X 1/2" 13mm Stainless Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
wont rust and hence will last a long time near the beach. Main use is to replace the nails in some electrical / coax / misting tube clamps by removing the nail and drilling a 3mm hole. Then a cordless drill can drive them into a timber section that would otherwise bend, vibrate etc. with a hammer, due to no supporting structure immediately behind the area that you wish to secure the cable / tube etc.
good
quality at a good price
| Alternative Brands | Brighton Best | Inox World |
| Brand | Hobson Engineering |
| Class Grade | A2-70 G304 |
| Custom Label 0 | Screws|Self Tappers|Countersunk Head |
| Drive Type | Phillips |
