| Grade | Description |
|---|---|
| Stainless G304 (A2) | Suitable for standard applications, providing robust corrosion resistance and durability. (Popular) |
Countersunk Security Bolts (Metric Coarse)
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Description
Countersunk Security Bolts Information
- Head Type: Countersunk head (flat head designed to sit flush with the surface).
- Drive Type: Post Torx drive (tamper-resistant Torx with center pin).
- Material: Stainless G304
- Finish: Available polished or blackened for improved shine or aesthetics.
- Thread Type: Fully threaded in the most common pitch, metric coarse
- Sizes: M4 M6 M8 M10
- Length: 10mm – 50mm
Countersunk Security Bolts
SELECTING SIZE
[example: M6 – 1.0p]
M6 = 6mm thread diameter
1.0p = 1mm between each thread (pitch)
*M6 – 1.0p bolts fit M6 – 1.0p nuts and M6 washers.
*Screw diameter measured from the outer thread.
SELECTING LENGTH
The stated length for Countersunk Bolts includes the head; the measurement is taken from the top of the head to the end of the thread.
SELECTING GRADE
Stainless G304 (A2)
Suitable for standard applications, providing robust corrosion resistance and durability. (Popular)
[Good Corrosion Resistance] [Grey-Silver]
For optimal performance and to reduce the risk of galvanic corrosion, it is recommended to use materials of the same grade in applications where corrosion resistance is critical.
✨Stainless Steel Polishing
Bright, polished finish for stainless steel hardware.
*not mirror finish
*Delivery time may increase by up to 2 day
*Coupons and pricing discounts do not apply
Cost: $5 minimum or +15% product price
⬛ Stainless Steel Blackening
Durable, non-reflective black finish for stainless steel hardware.
Suitable for internal and external use.
*Select Grade: Stainless G304 or G316 to enable
*Delivery time may increase by up to 14 days
*Coupons and pricing discounts do not apply
*$30 minimum blackening charge (may be shared across multiple selections through site; fee applies if minimum is not reached).
Cost: 2x product price. For example: $30 product + $30 Blackening
Match with Metric Coarse Nuts & Washers below
https://nutbolt.com.au/product-category/stainless-nuts/
https://nutbolt.com.au/product-category/stainless-steel-washers/
Buy online now! Next day delivery selectable at checkout for metro addresses
Contact us via live chat or email if you have any questions about our countersunk security bolts or any other product
Additional information
| Size | M4 – 0.7p, M6 – 1.0p, M8 – 1.25p, M10 – 1.5p |
|---|---|
| Length | 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm |
| Grade | Stainless G304 (A2) |













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