Hex Dome Cap Nuts
Standards: DIN 1587:2021
Hex dome cap nuts have a closed, rounded end that covers the projecting thread.
Specifications & details →Nuts
Product series, materials and dimensional information.
Prepare your nuts inquiry
Specify the nut form, mating thread, material grade or property class, finish and quantity. MOQ, samples, lead time and inspection documents are confirmed per order.
Nuts pair an internal thread with a body shape and bearing surface. Regular hex nuts, flange nuts, locking designs, cap nuts and special profiles serve different assembly requirements; a matching thread size alone does not make them interchangeable.
SPM accepts inquiries for standard catalog references and drawing-based alternatives. State the mating thread, nut dimensions, property class or material grade, locking requirements and finish.
13 series
Hex Flange Nuts
Standards: DIN 6923:1983
Hex flange nuts combine an internal thread, an external hex drive and an integral bearing flange.
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Hex Nuts / Full Nuts
Standards: DIN 934:1987; ISO 4032:2023
Hex regular nuts, often called full nuts, have an external hexagon drive and an internal thread.
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Hex Slotted Nuts
Standards: DIN 935-1:2013
Hex slotted nuts include slots in the upper portion of the nut.
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Hex Slotted Thin Nuts
Standards: DIN 979:2013
Hex slotted thin nuts combine a slotted top with a reduced-height profile.
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Hex Thin Nuts
Standards: DIN 936:1985
Hex thin nuts use a reduced-height body.
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Lock Nuts
Standards: DIN 980 (V):1987
All-metal lock nuts use a metallic prevailing-torque feature rather than a non-metallic insert.
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Nylon Lock Thick Nuts
Standards: DIN 982:1987
Thick nylon-insert lock nuts use a higher nut body with a non-metallic insert.
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Nylon Lock Thin Nuts
Standards: DIN 985:1987
Thin nylon-insert lock nuts combine a low-profile hex body with a non-metallic insert that provides the specified prevailing-torque feature..
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Square Nuts
Standards: DIN 557:1994
Square nuts have a four-sided external body and an internal thread.
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Square Thin Nuts
Standards: DIN 562:2013
Square thin nuts use a four-sided body with a reduced height.
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Structural Nuts
Standards: DIN 6915:1999
Structural nuts are specified for use in a defined structural bolting arrangement.
Specifications & details →,Cadmium Plating,Chromium Plating.jpg)
Wing Nuts
Standards: DIN 315:2016
Wing nuts have two projecting wings that permit hand operation.
Specifications & details →No matching series. Contact us to describe the part you need.
Need a different specification?
Choose Customized and share your drawing or requirements.
How to select nuts
| Thread matching | Body & clearance | Retention feature | Mating components |
|---|---|---|---|
| Confirm diameter, pitch, thread system and required tolerances. | Review nut height, width across flats and available tool or pocket clearance. | Specify plain, all-metal, nylon-insert or slotted designs explicitly. | Align nut properties with the bolt and the complete assembly specification. |
Materials and international specifications
SPM reviews carbon steel, alloy steel, stainless steel and non-ferrous material requirements, including titanium and nickel alloys. Exact grade and availability depend on the product and quotation.
| Material family | Information to include |
|---|---|
| Carbon / alloy steel | Exact grade, property class or hardness, heat-treatment and finish requirements. |
| Stainless steel | Grade, service environment, thread and surface-treatment requirements. |
| Titanium / nickel alloys | Exact alloy grade, drawing, critical tolerances and required inspection documents. |
| Aluminum | Exact grade, dimensions, finish and application requirements. |
Send the exact DIN / ISO, ASME, ASTM, API, SAE or JIS standard number and edition. These standards cover different product, material and testing requirements; naming a standard family alone is not a complete specification.
Dimensions and size selection
| Product series | Catalog diameter range | Dimensions to specify |
|---|---|---|
| Hex Dome Cap Nuts | M6 - M30 | Pitch, body height, width and bearing-face dimensions |
| Hex Flange Nuts | M5 - M20 | Pitch, body height, width and bearing-face dimensions |
| Hex Nuts / Full Nuts | M2 - M64 | Pitch, body height, width and bearing-face dimensions |
| Hex Slotted Nuts | M10 - M100 | Pitch, body height, width and bearing-face dimensions |
| Hex Slotted Thin Nuts | M6 - M48 | Pitch, body height, width and bearing-face dimensions |
| Hex Thin Nuts | M5 - M30 | Pitch, body height, width and bearing-face dimensions |
| Lock Nuts | M5 - M30 | Pitch, body height, width and bearing-face dimensions |
| Nylon Lock Thick Nuts | M8 - M48 | Pitch, body height, width and bearing-face dimensions |
| Nylon Lock Thin Nuts | M3 - M30 | Pitch, body height, width and bearing-face dimensions |
| Square Nuts | M6 - M36 | Pitch, body height, width and bearing-face dimensions |
| Square Thin Nuts | M6 - M30 | Pitch, body height, width and bearing-face dimensions |
| Structural Nuts | M12 - M36 | Pitch, body height, width and bearing-face dimensions |
| Wing Nuts | M4 - M20 | Pitch, body height, width and bearing-face dimensions |
Catalog ranges are initial references. Confirm the required dimensions, tolerances, material and applicable standard before ordering. Ranges do not imply that every listed material is available in every size.
Common questions
Can SPM quote customized nuts?
Yes. Select Customized and share the drawing, material grade, critical dimensions, quantity and required documents. The quotation confirms the agreed scope.
What if my size or product is not shown?
Choose Customized and provide a drawing, part number or clear description. Include the mating parts and application where they affect the selection.
Are the listed DIN and ISO references always interchangeable?
No. Compare the exact standard editions, dimensions, material requirements and product scope. The original catalog references are starting points for the inquiry.
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Seith Lee · +86 15821980914
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