Flat Head Knurled Body Rivet Nut, AVK Type (Inch & Metric)
Rivet Nuts (Insert Nuts)

Flat Head Knurled Body Rivet Nut, AVK Type (Inch & Metric)

US-style knurled rivet nut in UNC/UNF and ISO metric threads.

Section
Rivet nuts
Type
Special rivet nuts
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Overview

AVK-type flat head knurled rivet nuts follow US dimensions, in unified inch threads (to ASME B1.1, class 2B) and ISO metric threads (to ASME B1.13M, class 6H). The knurled body resists spinning in a round hole.

Each thread comes in two or three grip ranges to suit different sheet thicknesses.

Specifications

Part no. seriesSGFKAS01OE… (open end)
Inch threads6-32, 8-32, 10-24, 10-32 UNF, 1/4-20, 5/16-18, 3/8-16, 1/2-13 UNC
Metric threadsM4, M5, M6, M8, M10, M12
Grip range (inch)0.019" to 0.500"
Grip range (metric)0.5 mm to 12.7 mm
Length (metric)10.67 mm to 36.83 mm
Length (inch)0.420" to 1.450"
Head / bodyFlat head, knurled body, open end

Sizes & part numbers

All dimensions in mm. One row per grip range. The 2D drawing shows where each letter is measured.

Part no.ThreadMaterialGrip range
min–max		Hole size
+0.15 / 0		Body D
max		Head BHead KLength L
±0.38
SGFKAS01OEM410670520M4 × 0.7C0.5–2.06.756.739.910.7610.67
SGFKAS01OEM411942033C2.0–3.36.756.739.910.7611.94
SGFKAS01OEM512070533M5 × 0.8C0.5–3.37.607.5210.540.7612.07
SGFKAS01OEM514863357C3.3–5.77.607.5210.540.7614.86
SGFKAS01OEM614730742M6 × 1.0C0.7–4.210.009.9112.700.7614.73
SGFKAS01OEM617274266C4.2–6.610.009.9112.700.7617.27
SGFKAS01OEM817530738M8 × 1.25C0.7–3.813.5013.4617.400.8917.53
SGFKAS01OEM820453879C3.8–7.913.5013.4617.400.8920.45
SGFKAS01OEM1017530738M10 × 1.5C0.7–3.813.5013.4617.400.8917.53
SGFKAS01OEM1020453879C3.8–7.913.5013.4617.400.8920.45
SGFKAS01OEM1229211651M12 × 1.75C1.6–5.117.4717.4021.971.1929.21
SGFKAS01OEM1233025189C5.1–8.917.4717.4021.971.1933.02
SGFKAS01OEM12368389127C8.9–12.717.4717.4021.971.1936.83
SGFKAS01OE632UNC106705206-32UNCC0.5–2.06.756.739.910.7610.67
SGFKAS01OE632UNC11942033C2.0–3.36.756.739.910.7611.94
SGFKAS01OE832UNC106705208-32UNCC0.5–2.06.756.739.910.7610.67
SGFKAS01OE832UNC11942033C2.0–3.36.756.739.910.7611.94
SGFKAS01OE1024UNC1207053310-24UNCC0.5–3.37.607.5210.540.7612.07
SGFKAS01OE1024UNC14863357C3.3–5.77.607.5210.540.7614.86
SGFKAS01OE1032UNF1207053310-32UNFC0.5–3.37.607.5210.540.7612.07
SGFKAS01OE1032UNF14863357C3.3–5.77.607.5210.540.7614.86
SGFKAS01OE1420UNC147307421/4-20UNCC0.7–4.210.009.9112.700.7614.73
SGFKAS01OE1420UNC17274266C4.2–6.610.009.9112.700.7617.27
SGFKAS01OE51618UNC175307385/16-18UNCC0.7–3.813.5013.4617.400.8917.53
SGFKAS01OE51618UNC20453879C3.8–7.913.5013.4617.400.8920.45
SGFKAS01OE3816UNC175307383/8-16UNCC0.7–3.813.5013.4617.400.8917.53
SGFKAS01OE3816UNC20453879C3.8–7.913.5013.4617.400.8920.45
SGFKAS01OE1213UNC292116511/2-13UNCC1.6–5.117.4717.4021.971.1929.21
SGFKAS01OE1213UNC33025189C5.1–8.917.4717.4021.971.1933.02
SGFKAS01OE1213UNC368389127C8.9–12.717.4717.4021.971.1936.83

Material: C = Carbon steel. Part number = SG + type + grade (01 carbon steel, 02 aluminium, 034 stainless steel SS 304) + end (OE open, CE closed) + thread + length + grip range. Example: SGFK01OEM6150525 = flat head knurled, carbon steel, open end, M6, length 15, grip 0.5–2.5 mm.

How it works

A rivet nut gives a strong, reusable thread in sheet metal, tube or plastic that is too thin to tap, and it is fitted from one side only. Here is how this nut goes in.

1 Make the holeDrill or punch a round hole tothe size in the table. Noaccess to the back is needed.2 Insert the nutPush the nut in until the headsits on the sheet.3 Set itThe tool pulls the thread up:the thin wall behind the sheetfolds into a tight collar andclamps.4 FastenScrew in the bolt to fix thepart. The thread can be usedagain and again.
Installation in four steps (simplified illustration).

Knurled round body

The fine knurls bite into the wall of a round hole, so the nut resists spinning when the bolt is tightened. Round holes are the easiest to drill.

thin sheetthick sheet

Choosing the grip

Each part number sets in a range of sheet thickness (the grip). Pick the part whose grip covers your sheet: too thin and the collar will not clamp, too thick and the nut cannot fold. The hole size is in the table.

Open end

The thread runs right through, so a longer bolt can pass through the nut.

Head

Flat head: a wide head that spreads the load and covers the hole edge.

Setting tools

Set with a hand, pneumatic-hydraulic or battery tool fitted with the matching mandrel. See our riveting tools.

Key features

  • Inch and metric threads
  • Matches US drawings
  • Several grip ranges per thread

Applications

Export equipmentHVACAutomotiveElectrical enclosures
Need a size, grade or finish not listed?We also supply special and non-standard parts to drawing.Send enquiry

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