4x20 Solid aluminium rivets with round head DIN 660 1000 pcs.

Solid aluminium rivets DIN 660 — 4 × 20 mm, round head, 1000 pieces

Uncoated solid aluminium rivet with a factory-formed round head and a solid cylindrical shank. The joint is made by riveting the free end of the shank. The size 4 × 20 mm denotes a nominal shank diameter of 4 mm and a length of 20 mm measured under the head. The technical data sheet specifies DIN 660 and reference PN 82952.

Rivet dimensions and specifications before installation

• Standard: DIN 660
• PN reference: PN 82952
• Rivet type: Solid
• Head type: Round
• Shank diameter d1: 4 mm
• Diameter deviation d1: ±0,1 mm
• Shank length l: 20 mm (under the head, nominal)
• Head diameter d2: 7 mm
• Head diameter tolerance d2: h15
• Minimum diameter d3: 3,87 mm
• Dimension e: Max. 2 mm
• Head height k: 2,4 mm
• Head height tolerance k: js14
• Head radius r1: Approximately 3,8 mm
• Material: Aluminium Al
• Aluminium grade according to the data sheet: Al 99,5
• Coating: Uncoated
• Minimum strength Rm according to the data sheet: 100 N/mm²
• Material standard according to the data sheet: DIN 1769-1
• General requirements according to the data sheet: DIN 101

For the aluminium version, the data sheet specifies Al 99,5, minimum strength Rm 100 N/mm² and the material standard DIN 1769-1. These are catalogue requirements in the data sheet, not a test result for this batch, a material certificate or a permissible load for the finished joint.

Installation dimensions according to the technical data sheet

Form A denotes a round closing head after riveting; form B denotes a conical closing head after riveting. These are two ways of forming the free end of the rivet. They do not change the factory-formed round head. The s values apply separately to each form, rather than to a common thickness range.

• Installation hole d7: 4,2 mm
• Hole tolerance d7: H12
• Thickness of joined components s — form A: 13 mm
• Thickness of joined components s — form B: 15 mm
• Closing head diameter d8: 7 mm
• Closing head height k1 — form A: 2,4 mm
• Closing head height k2 — form B: Approximately 1,9 mm
• Depth t1 — form B: 1,8 mm

Selecting the rivet and riveting method requires consideration of component thickness, hole preparation and the tools used. Tolerance designations from the data sheet are given; no unconfirmed numerical length deviations have been added.

Scope of delivery and weight

Sales unit: Pack — 1000 aluminium rivets DIN 660 4 × 20 mm. The price covers this quantity.

Existing weight assigned to the sales quantity of 1000 pieces: 0,15 kg. The value has been retained without new calculations.

The graphics show the product family and illustrative packaging; they do not document the exact number of pieces or the actual delivery carton. Dimensions and quantity are specified in the specifications table. The in-house diagram shows the rivet before installation and is a catalogue illustration, not manufacturing documentation.

Frequently asked questions

How many rivets does the price cover?

The price covers 1000 pieces.

Does the length of 20 mm include the head?

No. The nominal length of 20 mm is measured under the factory-formed round head.

What do forms A and B in the installation table mean?

Form A is a round closing head after riveting, and form B a conical closing head. For this size, thickness s — form A: 13 mm; form B: 15 mm. Installation hole: 4,2 mm.

What material is the rivet made of?

This is the uncoated aluminium version. The technical data sheet for aluminium specifies Al 99,5 and the material standard DIN 1769-1.