DIN 603 | M12 x 25
dNominal Diameter · mmM12
lLength · mm25
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
Bolts
Mushroom Head Square Neck Bolts
DIN 603 · M6–M20 · Carbon Steel, Stainless Steel
DIN 603 (Current)Historical market reference: ISO 8677
● Available for quotation
- Head Form
- Round Head with Square Neck
- Material
- Carbon Steel, Stainless Steel
- Finish
- Zinc Plated, Blackened, Hot Dip Galvanized
- Property Class / Grade
- A2-70, 4.8, 8.8
MOQ: 500–2000 pcs · Lead time: 15 Days
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Available options
Material
Grade
Carbon Steel
Stainless Steel
Finish
57 sizes
| dNominal Diameter · mm | lLength · mm | PThread Pitch · mm | dₛBody Diameter (max) · mm | dₛ · Body Diameter (min) / 杆部直径（最小） (mm) | vSquare Neck Width (max) · mm | MOQ | Quantity and inquiry |
|---|---|---|---|---|---|---|---|
| M12 | 25 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 30 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 35 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 40 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 45 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 50 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 60 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 70 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 80 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M12 | 90 | 1.75 | 12 | 11.3 | 12.7 | 1000 | |
| M16 | 50 | 2 | 16 | 15.3 | 16.7 | 1000 | |
| M16 | 60 | 2 | 16 | 15.3 | 16.7 | 1000 | |
| M16 | 70 | 2 | 16 | 15.3 | 16.7 | 1000 | |
| M16 | 80 | 2 | 16 | 15.3 | 16.7 | 1000 | |
| M16 | 90 | 2 | 16 | 15.3 | 16.7 | 1000 | |
| M16 | 100 | 2 | 16 | 15.3 | 16.7 | 500 |
DIN 603 | M12 x 30
dNominal Diameter · mmM12
lLength · mm30
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 35
dNominal Diameter · mmM12
lLength · mm35
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 40
dNominal Diameter · mmM12
lLength · mm40
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 45
dNominal Diameter · mmM12
lLength · mm45
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 50
dNominal Diameter · mmM12
lLength · mm50
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 60
dNominal Diameter · mmM12
lLength · mm60
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 70
dNominal Diameter · mmM12
lLength · mm70
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 80
dNominal Diameter · mmM12
lLength · mm80
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M12 x 90
dNominal Diameter · mmM12
lLength · mm90
PThread Pitch · mm1.75
dₛBody Diameter (max) · mm12
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)11.3
vSquare Neck Width (max) · mm12.7
MOQ1000
DIN 603 | M16 x 50
dNominal Diameter · mmM16
lLength · mm50
PThread Pitch · mm2
dₛBody Diameter (max) · mm16
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)15.3
vSquare Neck Width (max) · mm16.7
MOQ1000
DIN 603 | M16 x 60
dNominal Diameter · mmM16
lLength · mm60
PThread Pitch · mm2
dₛBody Diameter (max) · mm16
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)15.3
vSquare Neck Width (max) · mm16.7
MOQ1000
DIN 603 | M16 x 70
dNominal Diameter · mmM16
lLength · mm70
PThread Pitch · mm2
dₛBody Diameter (max) · mm16
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)15.3
vSquare Neck Width (max) · mm16.7
MOQ1000
DIN 603 | M16 x 80
dNominal Diameter · mmM16
lLength · mm80
PThread Pitch · mm2
dₛBody Diameter (max) · mm16
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)15.3
vSquare Neck Width (max) · mm16.7
MOQ1000
DIN 603 | M16 x 90
dNominal Diameter · mmM16
lLength · mm90
PThread Pitch · mm2
dₛBody Diameter (max) · mm16
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)15.3
vSquare Neck Width (max) · mm16.7
MOQ1000
DIN 603 | M16 x 100
dNominal Diameter · mmM16
lLength · mm100
PThread Pitch · mm2
dₛBody Diameter (max) · mm16
dₛ · Body Diameter (min) / 杆部直径（最小） (mm)15.3
vSquare Neck Width (max) · mm16.7
MOQ500
Product description
Mushroom head square neck bolts manufactured to DIN 603. The round head with square neck prevents rotation during assembly. Available in carbon steel and stainless steel, with finishes including zinc plated, blackened, and hot dip galvanized. Property classes A2-70, 4.8, and 8.8 are offered. Sizes range from M6 to M10 in various lengths. For quotation, specify diameter, length, material, finish, and property class.
Key features
- Round head with square neck prevents rotation during tightening
- Available in carbon steel and stainless steel
- Finishes: zinc plated, blackened, hot dip galvanized
- Property classes: A2-70, 4.8, 8.8
Standard and order documents
The selected execution standard is the product basis. Published or order-specific documents are shown only when they have been confirmed for this product.
Order assurance
Available options; exact scope is fixed in the quotation or order.EN 10204 3.1 material certificate
Can be included when agreed in the order.
Certificate of conformity
Can be issued against the confirmed order requirements.
Dimensional inspection report
Can be provided for the agreed inspection scope.
Bulk carton packing
Available subject to confirmed piece weight and shipping requirements.
Small boxes with outer cartons
Available when the box quantity and labels are agreed.
Buyer branding and labels
Available after artwork, label content, placement and the applicable minimum batch are agreed.
Frequently Asked Questions
What documented quality support is available for Mushroom Head Square Neck Bolts?
Documents: EN 10204 3.1 material certificate, Certificate of conformity, Dimensional inspection report. Confirm the required scope and acceptance criteria in the quotation.
Which order and delivery details are already confirmed for Mushroom Head Square Neck Bolts?
MOQ: 500–2000 pcs. Lead time: 15 Days. Confirmed packing options include Bulk carton packing, Small boxes with outer cartons, Buyer branding and labels.
What information should be included in a quotation request for Mushroom Head Square Neck Bolts?
Provide the required standard, diameter or size, length, material, property class or grade, finish, quantity.
Related Products
Request this product by exact specification.
Add the required size, quantity, material, finish and documents where known.