ASNA0027 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | Blind bolt, pulled stem with locking collar |
| Material | Alloy steel (A) or A-286 stainless (B); stem mark C = stainless stem, no mark = alloy-steel stem |
| Strength | A: 112 ksi class; B: 95 ksi class (the standard prints 95 KSI without naming the property) |
| Item | Value |
|---|---|
| Locking | Pulled stem with a locking collar; the collar must never stand beyond the stem after the break |
| Finish | Not stated in the standard data |
| Status | Reference data transcribed from the standard, units marked row by row. Check the issue of the standard in force before design use. |
Dimensions by size
| Dimension, inch first (mm after) | -05 | -06 | -08 |
|---|---|---|---|
| Nominal Ø (code) | 5/32 in (0.156 in; 3.97 mm) | 3/16 in (0.188 in; 4.76 mm) | 1/4 in (0.250 in; 6.35 mm) |
| Body Ø | 0.163 in (4.14 mm) | 0.198 in (5.03 mm) | 0.259 in (6.58 mm) |
| Hole † | 0.164–0.167 in (4.16–4.24 mm†) | 0.199–0.202 in (5.05–5.13 mm†) | 0.260–0.263 in (6.60–6.68 mm†) |
| Drill (chart) | #19 (0.1660 in; 4.22 mm) | #7 (0.2010 in; 5.11 mm) | G (0.2610 in; 6.63 mm) |
| Max deburr Ø † | 0.190 in (4.83 mm†) | 0.235 in (5.97 mm†) | 0.296 in (7.52 mm†) |
Units: no mark = printed in mm and stated by the standard. † = printed with no unit; the inch value is our conversion, reading the figure as mm. Nominal Ø is our reading of the inch code (1/32 in for diameters, 1/16 in for grips). Drill: from the site drill chart, inside the hole range.
Part numbers
Part numbers by diameter code and grip. Grip ranges: inch is our conversion of the mm the standard prints. The rows show the S / A variant: swap the letters for U or B (see What each code means).
-05 · 5/32 in nominal13 part numbers
| Part no. | Grip, in (mm printed) |
|---|---|
| ASNA0027SA0502 | 0.094–0.157 (2.39–3.98) |
| ASNA0027SA0503 | 0.156–0.220 (3.96–5.59) |
| ASNA0027SA0504 | 0.219–0.282 (5.56–7.16) |
| ASNA0027SA0505 | 0.281–0.345 (7.14–8.76) |
| ASNA0027SA0506 | 0.344–0.407 (8.74–10.34) |
| ASNA0027SA0507 | 0.406–0.470 (10.31–11.94) |
| ASNA0027SA0508 | 0.469–0.532 (11.91–13.51) |
| ASNA0027SA0509 | 0.531–0.595 (13.49–15.11) |
| ASNA0027SA0510 | 0.594–0.657 (15.09–16.68) |
| ASNA0027SA0511 | 0.656–0.720 (16.66–18.29) |
| ASNA0027SA0512 | 0.719–0.782 (18.26–19.86) |
| ASNA0027SA0513 | 0.781–0.845 (19.84–21.46) |
| ASNA0027SA0514 | 0.844–0.907 (21.44–23.03) |
-06 · 3/16 in nominal13 part numbers
| Part no. | Grip, in (mm printed) |
|---|---|
| ASNA0027SA0602 | 0.094–0.157 (2.39–3.98) |
| ASNA0027SA0603 | 0.156–0.220 (3.96–5.59) |
| ASNA0027SA0604 | 0.219–0.282 (5.56–7.16) |
| ASNA0027SA0605 | 0.281–0.345 (7.14–8.76) |
| ASNA0027SA0606 | 0.344–0.407 (8.74–10.34) |
| ASNA0027SA0607 | 0.406–0.470 (10.31–11.94) |
| ASNA0027SA0608 | 0.469–0.532 (11.91–13.51) |
| ASNA0027SA0609 | 0.531–0.595 (13.49–15.11) |
| ASNA0027SA0610 | 0.594–0.657 (15.09–16.68) |
| ASNA0027SA0611 | 0.656–0.720 (16.66–18.29) |
| ASNA0027SA0612 | 0.719–0.782 (18.26–19.86) |
| ASNA0027SA0613 | 0.781–0.845 (19.84–21.46) |
| ASNA0027SA0614 | 0.844–0.907 (21.44–23.03) |
-08 · 1/4 in nominal13 part numbers
| Part no. | Grip, in (mm printed) |
|---|---|
| ASNA0027SA0802 | 0.094–0.157 (2.39–3.98) |
| ASNA0027SA0803 | 0.156–0.220 (3.96–5.59) |
| ASNA0027SA0804 | 0.219–0.282 (5.56–7.16) |
| ASNA0027SA0805 | 0.281–0.345 (7.14–8.76) |
| ASNA0027SA0806 | 0.344–0.407 (8.74–10.34) |
| ASNA0027SA0807 | 0.406–0.470 (10.31–11.94) |
| ASNA0027SA0808 | 0.469–0.532 (11.91–13.51) |
| ASNA0027SA0809 | 0.531–0.595 (13.49–15.11) |
| ASNA0027SA0810 | 0.594–0.657 (15.09–16.68) |
| ASNA0027SA0811 | 0.656–0.720 (16.66–18.29) |
| ASNA0027SA0812 | 0.719–0.782 (18.26–19.86) |
| ASNA0027SA0813 | 0.781–0.845 (19.84–21.46) |
| ASNA0027SA0814 | 0.844–0.907 (21.44–23.03) |
Part number
How to read it
| Segment | Reads as ASNA0027SB0503 |
|---|---|
| ASNA0027 Standard | Blind bolt with pulled stem and locking collar (MAXIBOLT type), steel or A-286 stainless. Head: protruding cylindrical head.Unit of the code: None: the number of the standardFrom: The standard |
| S Type | With driving cap or washer, single-action installation, -MB pulling headsUnit of the code: Letter, no unitFrom: Letter list; the meanings marked as a reading come from the partner standards |
| B Material | A-286 stainless, 95 ksi classUnit of the code: Letter, no unitFrom: Letter list; the meanings marked as a reading come from the partner standards |
| 05 Diameter | 5/32 in nominal: 5 × 1/32 in (0.156 in · 3.969 mm, our conversion); body diameter 0.163 in · 4.14 mm; hole 0.164–0.167 in · 4.16–4.24 mm (mm by context); deburr diameter, max 0.190 in · 4.83 mm (mm by context).Unit of the code: 1/32 in, by the inch dash logic (the unit of the code is not printed); inch and mm values are our conversionFrom: Diameter and hole table (Dimensions by size, above) |
| 03 Grip | 3/16 in nominal grip; stack 0.156–0.220 in · 3.96–5.59 mm.Unit of the code: 1/16 in steps, nominal grip (inch dash logic); the range is printed in mmFrom: Grip table (Part numbers, above) |
Worked example. ASNA0027SB0503 reads: ASNA0027 Maxibolt-type blind bolt, protruding cylindrical head · S washer, -MB heads · B stainless steel · 05 5/32 in, hole 4.16–4.24 mm, drill #19 · 03 3/16 in, stack 3.96–5.59 mm.
From a measured hole or stack to the code
- Hole to diameter code. Measure the hole and take the code whose hole range holds it, never the nominal: 05 → 4.16–4.24 · 06 → 5.05–5.13 · 08 → 6.60–6.68 mm.
- Stack to grip code. Measure the total thickness to be joined with a grip gauge and take the code whose range holds it, for that diameter: a 4.80 mm stack with diameter 05 → grip 03 (3.96–5.59 mm).
If a segment is missing
- Without the standard number the codes cannot be read: grip code 04 is 4.78–6.35 mm on ASNA0077/0078, 5.56–7.16 mm on ASNA0026/0027, 5.59–7.14 mm on ASNA0081/0082.
- No type letter: the number is incomplete, and S and U are not the same part (U has no washer and uses the -MBU pulling heads).
- No material letter: the number is incomplete; A and B are different materials and strengths, and a default is not given by the standard.
- No diameter or grip code: the number names the family only, not a part; a default size is not given by the standard.
- No grip code: the number is incomplete; a default grip is not given by the standard.
What each code means
| Part | Meaning |
|---|---|
| Format | ASNA0027<type><material><dash> |
| S | Type: With driving cap or washer, single-action installation, -MB pulling heads |
| U | Type: Without washer, -MBU pulling heads (reading from the maker's heads and the MS90353 U column) |
| A | Material: Alloy steel, 112 ksi class (reading from the partner standards; confirm on the standard) |
| B | Material: A-286 stainless, 95 ksi class |
| Example | ASNA0027SB0503 — Type S, stainless (B), diameter code 05 (5/32 in nominal), grip code 03 (0.156–0.220 in; 3.96–5.59 mm printed) |
Tools by diameter code
| Code | Tool | Straight head | 90° head | Offset head |
|---|---|---|---|---|
| 05 | G83 (or G704B / G747 with the -456 heads) | H83B-5MB | H828-5MB + adapter 744-300 | H782 + insert 782-456 + adapter 744-300 |
| 06 | G83 | H83B-6MB | H828-6MB + adapter 744-300 | H856-6MB + adapter 744-300 |
| 08 | G84 | H84A-8MB | none on the standard's sheet | none |
| U type, 05 | as S | H83B-5MBU | H828-5MBU | — |
| U type, 06 | as S | H83B-6MBU | H828-6MB with U nosepiece 828-036 | — |
| U type, 08 | as S | H84A-8MBU, H84C-8MBU, H84D-8MBU | — | — |
From the standards' tooling table and the maker's pulling-head sheets. U-type heads and the titanium -8 head are the maker's catalogue. The G746A is recommended only for Maxibolt -4 and -5.
Inspection limits
| Check | Limit, inch first |
|---|---|
| Gap under the head | Not more than 0.004 in (0.10 mm, printed in mm). Protruding head: on no more than 10 % of the row and never on 2 consecutive fasteners. Countersunk head: over no more than half the periphery, on no more than 20 % of the row, never on 2 consecutive |
| Countersunk head flush | Ideal 0; accepted +0.05 / −0.10. Unit not stated (the other tolerances on the sheet are mm): not converted |
| Stem flush B (on the break) | code 05: ±0.010 in (±0.25 mm); code 06: ±0.010 in (±0.25 mm); code 08: ±0.015 in (±0.38 mm). Millimetres printed and stated |
| Collar flush A (never proud) | code 05: 0 / −0.017 in (−0.43 mm); code 06: 0 / −0.022 in (−0.56 mm); code 08: 0 / −0.029 in (−0.74 mm). Millimetres printed and stated |
| Collar | Must never stand beyond the stem after the break; check that it is present |
Limits as the standard gives them; the aircraft's SRM governs.
Notes from the standard
- Part number: ASNA0027 + type letter (S or U) + material letter (A or B) + diameter code (05, 06 or 08) + grip code (02 to 14).
- The A and U letters are read from the partner standards (MS90353, CR7310 and the maker's -MBU heads): confirm them on the standard. A stem marked C is stainless; no mark is alloy steel. The rows show the S / A variant; swap the letters as the code table says.
- The body is bigger than the nominal fraction: code 05 is 5/32 in nominal (0.156 in) but 0.163 in at the body, and the hole is 0.164–0.167 in. Drill from the hole table, never from the nominal.
- Protruding head: deburr the hole edge, up to the largest deburr diameter of the table. The countersink never goes through the sheet: a straight bore of at least 0.008 in (0.2 mm, printed in mm) remains.
- The Maxibolt grip code n is shifted 1/32 in against the Cherry-type codes (code 04 is 0.219–0.282 in here, 0.188–0.250 in on CherryMAX). Lengths in work documents are indicative: measure the stack with a grip gauge.
- Units: no mark = printed in mm and stated by the standard. † = printed with no unit; the inch value is our conversion, reading the figure as mm. Nominal Ø is our reading of the inch code (1/32 in for diameters, 1/16 in for grips). Drill: from the site drill chart, inside the hole range.
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Sources
- ASNA0027 standard (ASNA series) — Codes, tables, tooling and inspection limits transcribed into the reference data of The Aviation Point. The text of the standard is not reproduced. Check the issue in force before design use.
- Cherry Aerospace pulling-head sheets — -MBU heads for the U type and the titanium -8 offset head; the same data feeds the Cherry pulling head selector.
- US federal item records (NSN) and distributor listings — Partner numbers. The evidence is named on each cross line: federal NSN record, manufacturer catalogue, or distributor listing (alternate, not identical).
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.