ISO 15481 ST5.5×16 Pan Head Drill Screw7 combinations of material, property class and finish supplied in this size.

Standard
ISO 15481 · 1999
Thread
ST5.5 · pitch 1.8 mm
Length under head
16 mm
Head height
4 mm
Weight
5.10 kg per 1 000 pieces · Theoretical, from nominal geometry — confirm before ordering196 pieces per kg
Also named
GB/T 15856.1

Supplied to ISO 15481 ST5.5×16 — the figures shown here match GB/T 15856.1. All 2 record the same figures in this size. Compared on the columns shown here only — product grade, tolerance class, length range, material and property-class references are set by each standard separately. We produce to whichever one your drawing calls out. Compare all sizes →

Recess NumberLkdkdPt
View in 3D
ISO 15481 dimension tablePDF · every size

Order ST5.5×16

Set a quantity on as many rows as you need. Not listed? We make to your drawing — send it with the enquiry.

Every standard listed here records the same figures at ST5.5×16. Your choice is carried into the inquiry and the quotation.

MaterialClassFinishQuantityNet weight
Carbon SteelZinc Plated
Carbon SteelDacromet
Carbon SteelRuspert
Carbon SteelPhosphate
Carbon SteelPlain
Stainless SteelPlain
Stainless SteelPassivated

Dimensions at ST5.5×16

one row per dimension
DimensionISO 15481CurrentGB/T 15856.1Current
Thread PitchP (mm)1.81.8
Thread Runout (max)a (mm)1.81.8
Underhead Diameter (max)da (mm)6.36.3
Head Diameterdk (mm)1111
Head Diameter (min)dk min (mm)10.5710.57
Nominal Head Heightk (mm)44
Head Height (min)k (mm)3.73.7
Radius (min)r (mm)0.250.25
Head Radius (ref.)rf (mm)99
Recess Number33
Type H Recess Width (ref.)m (mm)6.46.4
Type H Penetration (max)t (mm)3.13.1
Type H Penetration (min)t (mm)2.62.6
Type Z / Socket Width (ref.)m/A (mm)6.26.2
Type Z Penetration (max)t (mm)33
Type Z Penetration (min)t (mm)2.552.55
Drilling Capacity (min)t (mm)1.751.75
Drilling Capacity (max)t (mm)5.255.25

Plating adds thickness — state the finish on the order.

Other lengths in ST5.5

All sizes →
Sizekg per 1 000 pieces
ST5.5×165.10this page
ST5.5×195.62open
ST5.5×226.14open
ST5.5×256.66open
ST5.5×327.88open

ST5.5 x 19ST5.5 x 22ST5.5 x 25ST5.5 x 32ST5.5 x 38ST5.5 x 45ST5.5 x 50

Quote ISO 15481 ST5.5×16 Pan Head Drill Screw

Standard, size, material, finish, quantity and destination are enough to begin.